2014 CODATA Complete Listing as of June 1 2017 from  http://physics.nist.gov/constants
                    (raw downloaded 2014 allascii.txt   : below1)
                    (this NOWCONST.HTM previous version : below2)
                    (raw downloaded 2010 allascii.txt   : below3)

 ss : no change from 2010 at the 7th decimal place as a POWER of 10 rounded off to 7 decimal places
 W1 :  1 digit difference at the 7th decimal place as a POWER of 10 rounded off to 7 decimal places
 W2 : 2 digits difference at the 7th decimal place as a POWER of 10 rounded off to 7 decimal places  & etc.
 note:  entries in PWR of 10 column are magnitudes using negative signs to indicate numerical value
   & under SCIENTIFIC NOTATION VALUE column negative signs (as polarity indicators) are ignored in calculating magnitudes

  Quantity                                       PWR of 10  SCIENTIFIC NOTATION VALUE   Uncertainty           Unit
-----------------------------------------------------------------------------------------------------------------------------
{220} lattice spacing of silicon                -9.7166636  192.015 5714 e-12        0.000 0032 e-12          m
alpha particle-electron mass ratio          ss   3.8629836  7294.299 541 36          0.000 000 24
alpha particle mass                         W1 -26.1775274  6.644 657 230 e-27       0.000 000 082 e-27       kg
alpha particle mass energy equivalent           -9.2238860  5.971 920 097 e-10       0.000 000 073 e-10       J
alpha particle mass energy equivalent in MeV     3.5714036  3727.379 378             0.000 023                MeV
alpha particle mass in u                         0.6022235  4.001 506 179 127        0.000 000 000 063        u
alpha particle molar mass                   ss  -2.3977765  4.001 506 179 127 e-3    0.000 000 000 063 e-3    kg mol^-1
alpha particle-proton mass ratio            ss   0.5990748  3.972 599 689 07         0.000 000 000 36
Angstrom star                               ss  -9.9999935  1.000 014 95 e-10        0.000 000 90 e-10        m
atomic mass constant                        ss -26.7797509  1.660 539 040 e-27       0.000 000 020 e-27       kg
atomic mass constant energy equivalent          -9.8261095  1.492 418 062 e-10       0.000 000 018 e-10       J
atomic mass constant energy equivalent in MeV    2.9691801  931.494 0954             0.000 0057               MeV
atomic mass unit-electron volt relationship      8.9691801  931.494 0954 e6          0.000 0057 e6            eV
atomic mass unit-hartree relationship            7.5344294  3.423 177 6902 e7        0.000 000 0016 e7        E_h
atomic mass unit-hertz relationship             23.3526345  2.252 342 7206 e23       0.000 000 0010 e23       Hz
atomic mass unit-inverse meter relationship     14.8758138  7.513 006 6166 e14       0.000 000 0034 e14       m^-1
atomic mass unit-joule relationship             -9.8261095  1.492 418 062 e-10       0.000 000 018 e-10       J
atomic mass unit-kelvin relationship            13.0338074  1.080 954 38 e13         0.000 000 62 e13         K
atomic mass unit-kilogram relationship         -26.7797509  1.660 539 040 e-27       0.000 000 020 e-27       kg
atomic unit of 1st hyperpolarizability      W1 -52.4939876  3.206 361 329 e-53       0.000 000 020 e-53       C^3 m^3 J^-2
atomic unit of 2nd hyperpolarizability      W1 -64.2051371  6.235 380 085 e-65       0.000 000 077 e-65       C^4 m^4 J^-3
atomic unit of action                       W1 -33.9769238  1.054 571 800 e-34       0.000 000 013 e-34       J s
atomic unit of charge                       ss -18.7952896  1.602 176 6208 e-19      0.000 000 0098 e-19      C
atomic unit of charge density               ss  12.0339070  1.081 202 3770 e12       0.000 000 0067 e12       C m^-3
atomic unit of current                      ss  -2.1789047  6.623 618 183 e-3        0.000 000 041 e-3        A
atomic unit of electric dipole mom.         ss -29.0716885  8.478 353 552 e-30       0.000 000 052 e-30       C m
atomic unit of electric field               ss  11.7111495  5.142 206 707 e11        0.000 000 032 e11        V m^-1
atomic unit of electric field gradient      ss  21.9875484  9.717 362 356 e21        0.000 000 060 e21        V m^-2
atomic unit of electric polarizability      ss -40.7828380  1.648 777 2731 e-41      0.000 000 0011 e-41      C^2 m^2 J^-1
atomic unit of electric potential           W1   1.4347507  27.211 386 02            0.000 000 17             V
atomic unit of electric quadrupole mom.     W1 -39.3480873  4.486 551 484 e-40       0.000 000 028 e-40       C m^2
atomic unit of energy                       W1 -17.3605389  4.359 744 650 e-18       0.000 000 054 e-18       J
atomic unit of force                        ss  -7.0841401  8.238 723 36 e-8         0.000 000 10 e-8         N
atomic unit of length                       ss -10.2763989  0.529 177 210 67 e-10    0.000 000 000 12 e-10    m
atomic unit of mag. dipole mom.             W1 -22.7317024  1.854 801 999 e-23       0.000 000 011 e-23       J T^-1
atomic unit of mag. flux density            ss   5.3711635  2.350 517 550 e5         0.000 000 014 e5         T
atomic unit of magnetizability              ss -28.1028659  7.891 036 5886 e-29      0.000 000 0090 e-29      J T^-2
atomic unit of mass                         ss -30.0405110  9.109 383 56 e-31        0.000 000 11 e-31        kg
atomic unit of mom.um                       ss -23.7005250  1.992 851 882 e-24       0.000 000 024 e-24       kg m s^-1
atomic unit of permittivity                 ss  -9.9536414  1.112 650 056... e-10    (exact)                  F m^-1
atomic unit of time                         ss -16.6163849  2.418 884 326 509 e-17   0.000 000 000 014 e-17   s
atomic unit of velocity                     ss   6.3399860  2.187 691 262 77 e6      0.000 000 000 50 e6      m s^-1
Avogadro constant                           W1  23.7797509  6.022 140 857 e23        0.000 000 074 e23        mol^-1
Bohr magneton                               W1 -23.0327324  927.400 9994 e-26        0.000 0057 e-26          J T^-1
Bohr magneton in eV/T                           -4.2374428  5.788 381 8012 e-5       0.000 000 0026 e-5       eV T^-1
Bohr magneton in Hz/T                           10.1460115  13.996 245 042 e9        0.000 000 086 e9         Hz T^-1
Bohr magneton in inverse meters per tesla        1.6691908  46.686 448 14            0.000 000 29             m^-1 T^-1
Bohr magneton in K/T                            -0.1728156  0.671 714 05             0.000 000 39             K T^-1
Bohr radius                                 ss -10.2763989  0.529 177 210 67 e-10    0.000 000 000 12 e-10    m
Boltzmann constant                          W1 -22.8599169  1.380 648 52 e-23        0.000 000 79 e-23        J K^-1
Boltzmann constant in eV/K                      -4.0646273  8.617 3303 e-5           0.000 0050 e-5           eV K^-1
Boltzmann constant in Hz/K                      10.3188271  2.083 6612 e10           0.000 0012 e10           Hz K^-1
Boltzmann constant in inverse meters per kelvin  1.8420064  69.503 457               0.000 040                m^-1 K^-1
characteristic impedance of vacuum          ss   2.5760306  376.730 313 461...       (exact)                  ohm
classical electron radius                   ss -14.5500682  2.817 940 3227 e-15      0.000 000 0019 e-15      m
Compton wavelength                          ss -11.6150537  2.426 310 2367 e-12      0.000 000 0011 e-12      m
Compton wavelength over 2 pi                ss -12.4132335  386.159 267 64 e-15      0.000 000 18 e-15        m
conductance quantum                         ss  -4.1108052  7.748 091 7310 e-5       0.000 000 0018 e-5       S
conventional value of Josephson constant    ss  14.6844844  483 597.9 e9             (exact)                  Hz V^-1
conventional value of von Klitzing constant ss   4.4118352  25 812.807               (exact)                  ohm
Cu x unit                                      -12.9990989  1.002 076 97 e-13        0.000 000 28 e-13        m
deuteron-electron mag. mom. ratio       NEG ss  -3.3312093  -4.664 345 535 e-4       0.000 000 026 e-4
deuteron-electron mass ratio                ss   3.5647232  3670.482 967 85          0.000 000 13
deuteron g factor                           ss  -0.0667972  0.857 438 2311           0.000 000 0048
deuteron mag. mom.                          ss -26.3634384  0.433 073 5040 e-26      0.000 000 0036 e-26      J T^-1
deuteron mag. mom. to [Bm] ratio                -3.3307059  0.466 975 4554 e-3       0.000 000 0026 e-3
 " " " to nuclear magneton ratio                -0.0667972  0.857 438 2311           0.000 000 0048
deuteron mass                               ss -26.4757878  3.343 583 719 e-27       0.000 000 041 e-27       kg
deuteron mass energy equivalent                 -9.5221464  3.005 063 183 e-10       0.000 000 037 e-10       J
deuteron mass energy equivalent in MeV           3.2731432  1875.612 928             0.000 012                MeV
deuteron mass in u                               0.3039631  2.013 553 212 745        0.000 000 000 040        u
deuteron molar mass                         ss  -2.6960369  2.013 553 212 745 e-3    0.000 000 000 040 e-3    kg mol^-1
deuteron-neutron mag. mom. ratio        NEG ss  -0.3485218  -0.448 206 52            0.000 000 11
deuteron-proton mag. mom. ratio             W1  -0.5128444  0.307 012 2077           0.000 000 0015
deuteron-proton mass ratio                  ss   0.3008144  1.999 007 500 87         0.000 000 000 19
deuteron rms charge radius               W2231 -14.6693225  2.1413 e-15              0.0025 e-15              m
electric constant                           ss -11.0528513  8.854 187 817... e-12    (exact)                  F m^-1
electron charge to mass quotient        NEG ss  11.2452214  -1.758 820 024 e11       0.000 000 011 e11        C kg^-1
electron-deuteron mag. mom. ratio       NEG ss   3.3312093  -2143.923 499            0.000 012
electron-deuteron mass ratio                ss  -3.5647232  2.724 437 107 484 e-4    0.000 000 000 096 e-4
electron g factor                       NEG ss   0.3015333  -2.002 319 304 361 82    0.000 000 000 000 52
electron gyromag. ratio                     W1  11.2457247  1.760 859 644 e11        0.000 000 011 e11        s^-1 T^-1
 " " "/2Pi          as 10.4475449 $$$UNITS  ss   4.4475449  28 024.951 64            0.000 17                 MHz T^-1
electron-helion mass ratio                  ss  -3.7400377  1.819 543 074 854 e-4    0.000 000 000 088 e-4
electron mag. mom.                      NEG ss -23.0322291  -928.476 4620 e-26       0.000 0057 e-26          J T^-1
electron mag. mom. anomaly                  W1  -2.9356723  1.159 652 180 91 e-3     0.000 000 000 26 e-3
 " mag. mom. to Bohr magneton ratio     NEG ss    .0005033  -1.001 159 652 180 91    0.000 000 000 000 26
 " mag. mom. to nuclear magneton ratio  NEG W1   3.2644121  -1838.281 972 34         0.000 000 17
electron mass                               ss -30.0405110  9.109 383 56 e-31        0.000 000 11 e-31        kg
electron mass energy equivalent                -13.0868696  8.187 105 65 e-14        0.000 000 10 e-14        J
electron mass energy equivalent in MeV          -0.2915800  0.510 998 9461           0.000 000 0031           MeV
electron mass in u                              -3.2607601  5.485 799 090 70 e-4     0.000 000 000 16 e-4     u
electron molar mass                         ss  -6.2607601  5.485 799 090 70 e-7     0.000 000 000 16 e-7     kg mol^-1
electron-muon mag. mom. ratio               ss   2.3154812  206.766 9880             0.000 0046
electron-muon mass ratio                    ss  -2.3154839  4.836 331 70 e-3         0.000 000 11 e-3
electron-neutron mag. mom. ratio            ss   2.9826875  960.920 50               0.000 23
electron-neutron mass ratio                 ss  -3.2645070  5.438 673 4428 e-4       0.000 000 0027 e-4
electron-proton mag. mom. ratio         NEG ss   2.8183649  -658.210 6866            0.000 0020
electron-proton mass ratio                  ss  -3.2639088  5.446 170 213 52 e-4     0.000 000 000 52 e-4
electron-tau mass ratio                     W3  -3.5412232  2.875 92 e-4             0.000 26 e-4
electron to alpha particle mass ratio       ss  -3.8629836  1.370 933 554 798 e-4    0.000 000 000 045 e-4
 " to shielded helion mag. mom. ratio            2.9365430  864.058 257              0.000 010
 " to shielded proton mag. mom. ratio   NEG ss   2.8183761  -658.227 5971            0.000 0072
electron-triton mass ratio                  ss  -3.7401195  1.819 200 062 203 e-4    0.000 000 000 084 e-4
electron volt                               ss -18.7952896  1.602 176 6208 e-19      0.000 000 0098 e-19      J
electron volt-atomic mass unit relationship     -8.9691801  1.073 544 1105 e-9       0.000 000 0066 e-9       u
electron volt-hartree relationship              -1.4347507  3.674 932 248 e-2        0.000 000 023 e-2        E_h
electron volt-hertz relationship                14.3834544  2.417 989 262 e14        0.000 000 015 e14        Hz
electron volt-inverse meter relationship         5.9066337  8.065 544 005 e5         0.000 000 050 e5         m^-1
electron volt-joule relationship               -18.7952896  1.602 176 6208 e-19      0.000 000 0098 e-19      J
electron volt-kelvin relationship                4.0646273  1.160 452 21 e4          0.000 000 67 e4          K
electron volt-kilogram relationship            -35.7489310  1.782 661 907 e-36       0.000 000 011 e-36       kg
elementary charge                           ss -18.7952896  1.602 176 6208 e-19      0.000 000 0098 e-19      C
elementary charge over h                    ss  14.3834544  2.417 989 262 e14        0.000 000 015 e14        A J^-1
Faraday constant                            ss   4.9844613  96 485.332 89            0.000 59                 C mol^-1
 " " for conventional electric current      ss   4.9844613  96 485.3251              0.0012                   C_90 mol^-1
Fermi coupling constant                         -4.9331604  1.166 3787 e-5           0.000 0006 e-5           GeV^-2
fine-structure constant                     ss  -2.1368347  7.297 352 5664 e-3       0.000 000 0017 e-3
first radiation constant                    W1 -15.4269227  3.741 771 790 e-16       0.000 000 046 e-16       W m^2
1st radiation const for spectral radiance   ss -15.9240726  1.191 042 953 e-16       0.000 000 015 e-16       W m^2 sr^-1
hartree-atomic mass unit relationship           -7.5344294  2.921 262 3197 e-8       0.000 000 0013 e-8       u
hartree-electron volt relationship               1.4347507  27.211 386 02            0.000 000 17             eV
Hartree energy                              W1 -17.3605389  4.359 744 650 e-18       0.000 000 054 e-18       J
  Hartree energy                     2010      -17.3605390  4.359 744 34 e-18        0.000 000 19 e-18        J
  Hartree energy                     2006      -17.3605390  4.359 744 17e-18      
hartree-hertz relationship                      15.8182050  6.579 683 920 711 e15    0.000 000 000 039 e15    Hz
hartree-inverse meter relationship               7.3413843  2.194 746 313 702 e7     0.000 000 000 013 e7     m^-1
hartree-joule relationship                     -17.3605389  4.359 744 650 e-18       0.000 000 054 e-18       J
hartree-kelvin relationship                      5.4993779  3.157 7513 e5            0.000 0018 e5            K
hartree-kilogram relationship                  -34.3141804  4.850 870 129 e-35       0.000 000 060 e-35       kg
helion-electron mass ratio                  ss   3.7400377  5495.885 279 22          0.000 000 27
helion g factor                         NEG ss   0.6289251  -4.255 250 616           0.000 000 050
helion mag. mom.                        NEG ss -25.9687461  -1.074 617 522 e-26      0.000 000 014 e-26       J T^-1
 " " "  to Bohr magneton ratio          NEG     -2.9360136  -1.158 740 958 e-3       0.000 000 014 e-3
 " " "  to nuclear magneton ratio       NEG ss   0.3278951  -2.127 625 308           0.000 000 025
helion mass                                 ss -26.3004734  5.006 412 700 e-27       0.000 000 062 e-27       kg
helion mass energy equivalent                   -9.3468319  4.499 539 341 e-10       0.000 000 055 e-10       J
helion mass energy equivalent in MeV             3.4484577  2808.391 586             0.000 017                MeV
helion mass in u                                 0.4792776  3.014 932 246 73         0.000 000 000 12         u
helion molar mass                           ss  -2.5207224  3.014 932 246 73 e-3     0.000 000 000 12 e-3     kg mol^-1
helion-proton mass ratio                    ss   0.4761289  2.993 152 670 46         0.000 000 000 29
hertz-atomic mass unit relationship            -23.3526345  4.439 821 6616 e-24      0.000 000 0020 e-24      u
hertz-electron volt relationship               -14.3834544  4.135 667 662 e-15       0.000 000 025 e-15       eV
hertz-hartree relationship                     -15.8182050  1.519 829 846 0088 e-16  0.000 000 000 0090 e-16  E_h
hertz-inverse meter relationship                -8.4768207  3.335 640 951... e-9     (exact)                  m^-1
hertz-joule relationship                       -33.1787440  6.626 070 040 e-34       0.000 000 081 e-34       J
hertz-kelvin relationship                      -10.3188271  4.799 2447 e-11          0.000 0028 e-11          K
hertz-kilogram relationship                    -50.1323854  7.372 497 201 e-51       0.000 000 091 e-51       kg
inverse fine-structure constant             ss   2.1368347  137.035 999 139          0.000 000 031
inverse meter-atomic mass unit relationship    -14.8758138  1.331 025 049 00 e-15    0.000 000 000 61 e-15    u
inverse meter-electron volt relationship        -5.9066337  1.239 841 9739 e-6       0.000 000 0076 e-6       eV
inverse meter-hartree relationship              -7.3413843  4.556 335 252 767 e-8    0.000 000 000 027 e-8    E_h
inverse meter-hertz relationship                 8.4768207  299 792 458              (exact)                  Hz
inverse meter-joule relationship               -24.7019233  1.986 445 824 e-25       0.000 000 024 e-25       J
inverse meter-kelvin relationship               -1.8420064  1.438 777 36 e-2         0.000 000 83 e-2         K
inverse meter-kilogram relationship            -41.6555647  2.210 219 057 e-42       0.000 000 027 e-42       kg
inverse of conductance quantum              ss   4.1108052  12 906.403 7278          0.000 0029               ohm
Josephson constant                          ss  14.6844844  483 597.8525 e9          0.0030 e9                Hz V^-1
joule-atomic mass unit relationship              9.8261095  6.700 535 363 e9         0.000 000 082 e9         u
joule-electron volt relationship                18.7952896  6.241 509 126 e18        0.000 000 038 e18        eV
joule-hartree relationship                      17.3605389  2.293 712 317 e17        0.000 000 028 e17        E_h
joule-hertz relationship                        33.1787440  1.509 190 205 e33        0.000 000 019 e33        Hz
joule-inverse meter relationship                24.7019233  5.034 116 651 e24        0.000 000 062 e24        m^-1
joule-kelvin relationship                       22.8599169  7.242 9731 e22           0.000 0042 e22           K
joule-kilogram relationship                    -16.9536414  1.112 650 056... e-17    (exact)                  kg
kelvin-atomic mass unit relationship           -13.0338074  9.251 0842 e-14          0.000 0053 e-14          u
kelvin-electron volt relationship               -4.0646273  8.617 3303 e-5           0.000 0050 e-5           eV
kelvin-hartree relationship                     -5.4993779  3.166 8105 e-6           0.000 0018 e-6           E_h
kelvin-hertz relationship                       10.3188271  2.083 6612 e10           0.000 0012 e10           Hz
kelvin-inverse meter relationship                1.8420064  69.503 457               0.000 040                m^-1
kelvin-joule relationship                      -22.8599169  1.380 648 52 e-23        0.000 000 79 e-23        J
kelvin-kilogram relationship                   -39.8135583  1.536 178 65 e-40        0.000 000 88 e-40        kg
kilogram-atomic mass unit relationship          26.7797509  6.022 140 857 e26        0.000 000 074 e26        u
kilogram-electron volt relationship             35.7489310  5.609 588 650 e35        0.000 000 034 e35        eV
kilogram-hartree relationship                   34.3141804  2.061 485 823 e34        0.000 000 025 e34        E_h
kilogram-hertz relationship                     50.1323854  1.356 392 512 e50        0.000 000 017 e50        Hz
kilogram-inverse meter relationship             41.6555647  4.524 438 411 e41        0.000 000 056 e41        m^-1
kilogram-joule relationship                     16.9536414  8.987 551 787... e16     (exact)                  J
kilogram-kelvin relationship                    39.8135583  6.509 6595 e39           0.000 0037 e39           K
lattice parameter of silicon                    -9.2651186  543.102 0504 e-12        0.000 0089 e-12          m
Loschmidt constant (273.15 K, 100 kPa)      W1  25.4235157  2.651 6467 e25           0.000 0015 e25           m^-3
Loschmidt constant (273.15 K, 101.325 kPa)  W1  25.4292323  2.686 7811 e25           0.000 0015 e25           m^-3
mag. constant                               ss  -5.9007901  12.566 370 614... e-7    (exact)                  N A^-2
mag. flux quantum                           ss -14.6844844  2.067 833 831 e-15       0.000 000 013 e-15       Wb
molar gas constant  ROUND OFF EFFECT????? : W2   0.9198340  8.314 4598               0.000 0048               J mol^-1 K^-1
molar mass constant                         ss  -3.0000000  1 e-3                    (exact)                  kg mol^-1
molar mass of carbon-12                         -1.9208188  12 e-3                   (exact)                  kg mol^-1
molar Planck constant                       ss  -9.3989931  3.990 312 7110 e-10      0.000 000 0018 e-10      J s mol^-1
molar Planck constant times c               ss  -0.9221724  0.119 626 565 582        0.000 000 000 054        J m mol^-1
 " volume of ideal gas(273.15 K, 100 kPa)   W2  -1.6437648  22.710 947 e-3           0.000 013 e-3            m^3 mol^-1
 " "  of ideal gas (273.15 K, 101.325 kPa)  W1  -1.6494814  22.413 962 e-3           0.000 013 e-3            m^3 mol^-1
molar volume of silicon                         -4.9186948  12.058 832 14 e-6        0.000 000 61 e-6         m^3 mol^-1
Mo x unit                                      -12.9990891  1.002 099 52 e-13        0.000 000 53 e-13        m
muon Compton wavelength                     ss -13.9305376  11.734 441 11 e-15       0.000 000 26 e-15        m
muon Compton wavelength over 2 pi           W1 -14.7287175  1.867 594 308 e-15       0.000 000 042 e-15       m
muon-electron mass ratio                    ss   2.3154839  206.768 2826             0.000 0046
muon g factor                           NEG ss   0.3015361  -2.002 331 8418          0.000 000 0013
muon mag. mom.                          NEG ss -25.3477103  -4.490 448 26 e-26       0.000 000 10 e-26        J T^-1
muon mag. mom. anomaly                      ss  -2.9333309  1.165 920 89 e-3         0.000 000 63 e-3
muon mag. mom. to Bohr magneton ratio   NEG ss  -2.3149779  -4.841 970 48 e-3        0.000 000 11 e-3
muon mag. mom. to nuclear magneton "    NEG W1   0.9489309  -8.890 597 05            0.000 000 20
muon mass           $$$$$  2010 & 2014--->  ss -27.7250271  1.883 531 594 e-28       0.000 000 048 e-28       kg
muon mass energy equivalent                    -10.7713857  1.692 833 774 e-11       0.000 000 043 e-11       J
muon mass energy equivalent in MeV               2.0239039  105.658 3745             0.000 0024               MeV
muon mass in u                                  -0.9452762  0.113 428 9257           0.000 000 0025           u
muon molar mass                             ss  -3.9452762  0.113 428 9257 e-3       0.000 000 0025 e-3       kg mol^-1
muon-neutron mass ratio                     ss  -0.9490231  0.112 454 5167           0.000 000 0025
muon-proton mag. mom. ratio             NEG W1   0.5028837  -3.183 345 142           0.000 000 071
muon-proton mass ratio                      W1  -0.9484249  0.112 609 5262           0.000 000 0025
muon-tau mass ratio                         W3  -1.2257393  5.946 49 e-2             0.000 54 e-2
natural unit of action                      W1 -33.9769238  1.054 571 800 e-34       0.000 000 013 e-34       J s
natural unit of action in eV s                 -15.1816342  6.582 119 514 e-16       0.000 000 040 e-16       eV s
natural unit of energy                      W1 -13.0868696  8.187 105 65 e-14        0.000 000 10 e-14        J
natural unit of energy in MeV                   -0.2915800  0.510 998 9461           0.000 000 0031           MeV
natural unit of length                      ss -12.4132335  386.159 267 64 e-15      0.000 000 18 e-15        m
natural unit of mass                        ss -30.0405110  9.109 383 56 e-31        0.000 000 11 e-31        kg
natural unit of mom.um                      W1 -21.5636903  2.730 924 488 e-22       0.000 000 034 e-22       kg m s^-1
natural unit of mom.um in MeV/c                 -0.2915800  0.510 998 9461           0.000 000 0031           MeV/c
natural unit of time                        ss -20.8900542  1.288 088 667 12 e-21    0.000 000 000 58 e-21    s
natural unit of velocity                    ss   8.4768207  299 792 458              (exact)                  m s^-1
neutron Compton wavelength                  ss -14.8795607  1.319 590 904 81 e-15    0.000 000 000 88 e-15    m
neutron Compton wavelength over 2 pi        ss -15.6777406  0.210 019 415 36 e-15    0.000 000 000 14 e-15    m
neutron-electron mag. mom. ratio            ss  -2.9826875  1.040 668 82 e-3         0.000 000 25 e-3
neutron-electron mass ratio                 ss   3.2645070  1838.683 661 58          0.000 000 90
neutron g factor                        NEG ss   0.5827547  -3.826 085 45            0.000 000 90
neutron gyromag. ratio                      ss   8.2630373  1.832 471 72 e8          0.000 000 43 e8          s^-1 T^-1
 " " "/2Pi     as 7.4648574     $$$UNITS         1.4648574  29.164 6933              0.000 0069               MHz T^-1
neutron mag. mom.                           ss -26.0149166  -0.966 236 50 e-26       0.000 000 23 e-26        J T^-1
 " to Bohr magneton ratio               NEG ss  -2.9821841  -1.041 875 63 e-3        0.000 000 25 e-3
 " to nuclear magneton ratio            NEG ss   0.2817247  -1.913 042 73            0.000 000 45
neutron mass                                ss -26.7760040  1.674 927 471 e-27       0.000 000 021 e-27       kg
neutron mass energy equivalent                  -9.8223626  1.505 349 739 e-10       0.000 000 019 e-10       J
neutron mass energy equivalent in MeV            2.9729270  939.565 4133             0.000 0058               MeV
neutron mass in u                                0.0037469  1.008 664 915 88         0.000 000 000 49         u
neutron molar mass                          ss  -2.9962531  1.008 664 915 88 e-3     0.000 000 000 49 e-3     kg mol^-1
neutron-muon mass ratio                     ss   0.9490231  8.892 484 08             0.000 000 20
neutron-proton mag. mom. ratio          NEG ss  -0.1643225  -0.684 979 34            0.000 000 16
neutron-proton mass difference              W1 -29.6372210  2.305 573 77 e-30        0.000 000 85 e-30
 "-" " difference energy equivalent            -12.6835796  2.072 146 37 e-13        0.000 000 76 e-13
 "-" " difference energy equivalent in MeV       0.1117100  1.293 332 05             0.000 000 48
 "-" " difference in u                          -2.8574701  0.001 388 449 00         0.000 000 000 51
neutron-proton mass ratio                   ss   0.0005982  1.001 378 418 98         0.000 000 000 51
neutron-tau mass ratio                      ss  -0.2767168  0.528 790                0.000 048
  "  to shielded proton mag. mom. ratio NEG ss  -0.1643114  -0.684 996 94            0.000 000 16
Newtonian constant of gravitation  $$$$$$$$$$  -10.1756086  6.674 08 e-11            0.000 31 e-11            m^3 kg^-1 s^-2
   [G]/[hB][c]    :(IS MASS SQUARED)  $UNITS$  -38.1733674  6.708 61 e-39            0.000 31 e-39            (GeV/c^2)^-2
nuclear magneton                            W1 -26.2966412  5.050 783 699 e-27       0.000 000 031 e-27       J T^-1
nuclear magneton in eV/T                        -7.5013516  3.152 451 2550 e-8       0.000 000 0015 e-8       eV T^-1
nuclear magneton in inverse meters per tesla    -1.5947180  2.542 623 432 e-2        0.000 000 016 e-2        m^-1 T^-1
nuclear magneton in K/T                         -3.4367244  3.658 2690 e-4           0.000 0021 e-4           K T^-1
nuclear magneton in MHz/T                        0.8821027  7.622 593 285            0.000 000 047            MHz T^-1
Planck constant                             ss -33.1787440  6.626 070 040 e-34       0.000 000 081 e-34       J s
Planck constant in eV s                        -14.3834544  4.135 667 662 e-15       0.000 000 025 e-15       eV s
Planck constant over 2 pi                   W1 -33.9769238  1.054 571 800 e-34       0.000 000 013 e-34       J s
Planck constant over 2 pi in eV s              -15.1816342  6.582 119 514 e-16       0.000 000 040 e-16       eV s
Planck constant over 2 pi times c in MeV fm      2.2951865  197.326 9788             0.000 0012               MeV fm
Planck length                          $$$$$$$ -34.7914971  1.616 229 e-35           0.000 038 e-35           m
Planck mass                            $$$$$$$  -7.6622473  2.176 470 e-8            0.000 051 e-8            kg
Planck mass energy equivalent in GeV            19.0866837  1.220 910 e19            0.000 029 e19            GeV
Planck temperature  PE/Bk = PM c^2/Bk  $$$$$$$  32.1513110  1.416 808 e32            0.000 033 e32            K
Planck time                            $$$$$$$ -43.2683178  5.391 16 e-44            0.000 13 e-44            s
proton charge to mass quotient              ss   7.9813126  9.578 833 226 e7         0.000 000 059 e7         C kg^-1
proton Compton wavelength                   W1 -14.8789625  1.321 409 853 96 e-15    0.000 000 000 61 e-15    m
proton Compton wavelength over 2 pi         ss -15.6771423  0.210 308 910 109 e-15   0.000 000 000 097 e-15   m
proton-electron mass ratio                  ss   3.2639088  1836.152 673 89          0.000 000 17
proton g factor                             ss   0.7470772  5.585 694 702            0.000 000 017
proton gyromag. ratio                       ss   8.4273598  2.675 221 900 e8         0.000 000 018 e8         s^-1 T^-1
 " " "/2Pi           as 7.6291799  $$$$UNITS     1.6291799  42.577 478 92            0.000 000 29             MHz T^-1
proton mag. mom.                            W1 -25.8505940  1.410 606 7873 e-26      0.000 000 0097 e-26      J T^-1
proton mag. mom. to Bohr magneton ratio     ss  -2.8178616  1.521 032 2053 e-3       0.000 000 0046 e-3
 " " " to nuclear magneton ratio                 0.4460472  2.792 847 3508           0.000 000 0085
proton mag. shielding correction          W507  -4.5902190  25.691 e-6               0.011 e-6
proton mass                                 W1 -26.7766022  1.672 621 898 e-27       0.000 000 021 e-27       kg
proton mass energy equivalent                   -9.8229608  1.503 277 593 e-10       0.000 000 018 e-10       J
proton mass energy equivalent in MeV             2.9723288  938.272 0813             0.000 0058               MeV
proton mass in u                                 0.0031487  1.007 276 466 879        0.000 000 000 091        u
proton molar mass                           ss  -2.9968513  1.007 276 466 879 e-3    0.000 000 000 091 e-3    kg mol^-1
proton-muon mass ratio                      W1   0.9484249  8.880 243 38             0.000 000 20
proton-neutron mag. mom. ratio          NEG ss   0.1643225  -1.459 898 05            0.000 000 34
proton-neutron mass ratio                   ss   -.0005982  0.998 623 478 44         0.000 000 000 51
proton rms charge radius                W11894 -15.0579423  0.8751 e-15              0.0061 e-15              m
proton-tau mass ratio          ??????????   W5  -0.2773143  0.528 063                0.000 048
quantum of circulation                      ss  -3.4392630  3.636 947 5486 e-4       0.000 000 0017 e-4       m^2 s^-1
quantum of circulation times 2              ss  -3.1382330  7.273 895 0972 e-4       0.000 000 0033 e-4       m^2 s^-1
Rydberg constant                            ss   7.0403543  10 973 731.568 508       0.000 065                m^-1
Rydberg constant times c in Hz                  15.5171750  3.289 841 960 355 e15    0.000 000 000 019 e15    Hz
Rydberg constant times hc in eV                  1.1337207  13.605 693 009           0.000 000 084            eV
Rydberg constant times hc in J                              2.179 872 325 e-18       0.000 000 027 e-18       J
Sackur-Tetrode constant (1 K, 100 kPa)     NEG   0.0613425  -1.151 7084              0.000 0014
Sackur-Tetrode const (1 K, 101.325 kPa)    NEG   0.0662780  -1.164 8714              0.000 0014
second radiation constant                   W1  -1.8420064  1.438 777 36 e-2         0.000 000 83 e-2         m K
shielded helion gyromag. ratio              ss   8.3091817  2.037 894 585 e8         0.000 000 027 e8         s^-1 T^-1
  "  "  "  "  /2Pi   $$$UNITS as 7.5110018: W1   1.5110018  32.434 099 66            0.000 000 43             MHz T^-1
 " " mag. mom.                      NEG INCLUD -25.9687721  -1.074 553 080 e-26      0.000 000 014 e-26       J T^-1
 "  " " " to Bohr magneton ratio    NEG INCLUD  -2.9360397  -1.158 671 471 e-3       0.000 000 014 e-3
 "  " " " to nuclear magneton ratio NEG INCLUD   0.3278691  -2.127 497 720           0.000 000 025
 " " " "/proton mag. mom.           NEG INCLUD  -0.1181781  -0.761 766 5603          0.000 000 0092
 " " " "/shielded proton mag. mom.  NEG INCLUD  -0.1181669  -0.761 786 1313          0.000 000 0033
shielded proton gyromag. ratio              ss   8.4273487  2.675 153 171 e8         0.000 000 033 e8         s^-1 T^-1
  "  "  "  "/2Pi     $$$UNITS as 7.6291688  ss   1.6291688  42.576 385 07            0.000 000 53             MHz T^-1
shielded proton mag. mom.                   ss -25.8506052  1.410 570 547 e-26       0.000 000 018 e-26       J T^-1
shielded  " " " to [Bm] ratio                   -2.8178727  1.520 993 128 e-3        0.000 000 017 e-3
shielded  " " " to [Nm] ratio                    0.4460360  2.792 775 600            0.000 000 030
speed of light in vacuum                    ss   8.4768207  299 792 458              (exact)                  m s^-1
standard acceleration of gravity            ss   0.9915207  9.806 65                 (exact)                  m s^-2
standard atmosphere                         ss   5.0057166  101 325                  (exact)                  Pa
standard-state pressure                          5.0000000  100 000                  (exact)                  Pa
Stefan-Boltzmann constant                   W4  -7.2463888  5.670 367 e-8            0.000 013 e-8            W m^-2 K^-4
tau Compton wavelength                      ss -15.1562771  0.697 787 e-15           0.000 063 e-15           m
tau Compton wavelength/2Pi                  w1 -15.9544570  0.111 056 e-15           0.000 010 e-15           m
tau-electron mass ratio                     W1   3.5412234  3477.15                  0.31
tau mass           ?????  2010 & 2014--->   ss -26.4992875  3.167 47 e-27            0.000 29 e-27            kg
tau mass energy equivalent                      -9.5456461  2.846 78 e-10            0.000 26 e-10            J
tau mass energy equivalent in MeV                3.2496434  1776.82                  0.16                     MeV
tau mass in u                                    0.2804623  1.907 49                 0.000 17                 u
tau molar mass                              ss  -2.7195377  1.907 49 e-3             0.000 17 e-3             kg mol^-1
tau-muon mass  " CODATA 2010 & 2014: $$$$  W12   1.2257408  16.8167                  0.0015
tau-neutron mass ratio                      ss   0.2767168  1.891 11                 0.000 17
tau-proton mass ratio                       W1   0.2773157  1.893 72                 0.000 17
Thomson cross section                       ss -28.1770178  0.665 245 871 58 e-28    0.000 000 000 91 e-28    m^2
triton-electron mass ratio                  ss   3.7401195  5496.921 535 88          0.000 000 26
triton g factor                             ss   0.7750950  5.957 924 920            0.000 000 028
triton mag. mom.                            ss -25.8225762  1.504 609 503 e-26       0.000 000 012 e-26       J T^-1
  "   to Bohr magneton ratio                    -2.7898438  1.622 393 6616 e-3       0.000 000 0076 e-3
  "  . to nuclear magneton ratio                 0.4740650  2.978 962 460            0.000 000 014
triton mass                                 ss -26.3003915  5.007 356 665 e-27       0.000 000 062 e-27       kg
triton mass energy equivalent                   -9.3467501  4.500 387 735 e-10       0.000 000 055 e-10       J
triton mass energy equivalent in MeV             3.4485395  2808.921 112             0.000 017                MeV
triton mass in u                                 0.4793594  3.015 500 716 32         0.000 000 000 11         u
triton molar mass                           ss  -2.5206406  3.015 500 716 32 e-3     0.000 000 000 11 e-3     kg mol^-1
triton-proton mass ratio                    W1   0.4762107  2.993 717 033 48         0.000 000 000 22
unified atomic mass unit                    ss -26.7797509  1.660 539 040 e-27       0.000 000 020 e-27       kg
von Klitzing constant                       ss   4.4118352  25 812.807 4555          0.000 0059               ohm
weak mixing angle                           ss  -0.6530605  0.2223                   0.0021
Wien frequency displacement law constant    W1  10.7692978  5.878 9238 e10           0.000 0034 e10           Hz K^-1
Wien wavelength displacement law constant   W1  -2.5379357  2.897 7729 e-3           0.000 0017 e-3           m K
-----------------------------------------------------------------------------------------------------------------------------
  tau mass         $$$$$  2010 & 2014--->   ss -26.4992875  3.167 47 e-27            0.000 29 e-27            kg
  tau mass                       2006                       3.167 77
  muon mass         $$$$$  2010 & 2014--->  ss -27.7250271  1.883 531 594 e-28       0.000 000 048 e-28       kg
  muon mass                  2006                           1.883 531 30
proton-neutron mass ratio                   ss   -.0005982  0.998 623 478 44         0.000 000 000 51
neutron-proton mass ratio                   ss   0.0005982  1.001 378 418 98         0.000 000 000 51
tau-electron mass ratio                     W1   3.5412234  3477.15                  0.31
electron-tau mass ratio                     W3  -3.5412232  2.875 92 e-4             0.000 26 e-4
tau-neutron mass ratio                      ss   0.2767168  1.891 11                 0.000 17
neutron-tau mass ratio                      ss  -0.2767168  0.528 790                0.000 048

tau-proton mass ratio                       W1   0.2773157  1.893 72                 0.000 17
proton-tau mass ratio          ??????????   W5  -0.2773143  0.528 063                0.000 048

muon-tau mass ratio            ??????????   W3  -1.2257393  5.946 49 e-2             0.000 54 e-2
tau-muon mass  " CODATA 2010 & 2014: $$$$  W12   1.2257408  16.8167                  0.0015
 ([Mt] as 3.167 47 e-27 divided by [Mm] as 1.883 531 594 e-28 is 16.816654470...)
                                             = T+1.2257396 =     16.8166544362...
tau-muon mass ratio         2006                 1.2257821 =     16.8183
----------------------------------------------------------------------------------------------
CODATA 2014 :

Planck constant over 2 pi                [hB]  -33.9769238  1.054 571800 e-34                                 J s
 should be identical to               c PL PM  -33.9769237  1.054 57211440588164654e-34
 and                               G PM^2 / c  -33.9769239  1.054 5716105566428892617438694872e-24
 and                             PL^2 PM / PT  -33.9769237  1.054 5720440210313309195052641732e-34
 and                             PM PL / z0 k  -33.9769237  1.054 5721144819300418361597467864e-34

                                         hB c  -42.4537445  3.517 672882884865635946051718219e-43
 should be identical to                 PL PM  -42.4537444  3.517 67393163e-43
 and                                 a0 Me aa  -42.4537446  3.517 672884147858736693826745728e-43

Planck length                            [PL]  -34.7914971  1.616 229 e-35           0.000 038 e-35           m
             [G hB / c^3]^.5                   -34.7914973  1.616 2283729742846979595557127906e-35
Planck mass                              [PM]   -7.6622473  2.176 470 e-8            0.000 051 e-8            kg
             [hB c / G]^.5                      -7.6622473  2.176 4701954906432176618634527736e-8
Planck time                              [PT]  -43.2683178  5.391 16 e-44            0.000 13 e-44            s
             [G hB / c^5]^.5                   -43.2683180  5.391 157548647486982342817019068e-44
Planck temperature                       [PK]   32.1513110  1.416 808 e32            0.000 033 e32            K
 should be identical to     PM PL^2 Pf^2 / Bk   32.1513109  1.416 8076772741782458610038766559e+32
 and                        PE/Bk = PM c^2/Bk   32.1513110  1.416 807866396960...e+32
 and                 PE/Bk = PM PL^2 PF^2 /Bk   32.1513109  1.416 8076772741...e+32

[Planck charge]            [hB c k]^.5 = [PQ]  -18.2764772  5.290 8176468869942274541197862013e-19            C
[Planck charge]^2             hB c k = [PQ]^2  -36.5529544  2.799 2751372610830737815548e-37                  C^2
                              k c^2 PM PL      -36.5529543  2.799 2759718259439033714395961404e-37
                                PM PL / d      -36.5529543  2.799 2759721020909880352188696e-37

[Planck current]        Pf [hB c k]^.5 = [PC]   24.9918406  9.813 8761359095152572992079370697e+23            A
[Planck current]^2       k c^3 PM Pf = [PC]^2   49.9836813  9.631 2199953227131072806828328572e+49            A^2
                                  hB c k Pf^2   49.9836811  9.631 2164810974278381881380659283e+49

 CODATA 2014 Newtonian grav. constant      G   -10.1756086  6.674 08 e-11            0.000 31 e-11            m^3 kg^-1 s^-2
 should be identical to          c^2 PL / PM   -10.1756084  6.674 0831887167203659115907869164e-11
 and                             PL / PM d k   -10.1756084  6.674 0831893751151200970704821138e-11
 and                          PL^3 Pf^2 / PM   -10.1756084  6.674 0822978258573542961804839218e-11
 and                          PL^2 Pf c / PM   -10.1756084  6.674 0827432712739950175447864696e-11
 and                          hB / k z0 PM^2   -10.1756085  6.674 0811994137345312654670991623e-11
 and                     c^2 PL^2 / a0 Me aa   -10.1756082  6.674 0851761053092795622182591172e-11
 and                     Me a0 aa c^2 / PM^2   -10.1756085  6.674 0812013287232507320833766594e-11
 and               d Q0^2 c^2 / 4 Pi aa PM^2   -10.1756085  6.674 081199445115261996632631176e-11
 and   Q0^2 c^2 PL^2 d / 4 Pi aa^3 Me^2 a0^2   -10.1756083  6.674 0851742217001690362610702933e-11

 ****************
 GDA Planck length                       [PL]  -34.7909227
      <=>     [d aa^2  hB / c^3]^.5            -34.7909227  1.6183680050864570011621575148403e-35
 GDA Planck mass                         [PM]   -7.6628219
      <=>    [hB c / d aa^2 ]^.5                -7.6628218  2.173592700689200370898650106744e-8 
 GDA Planck time                         [PT]  -43.2677434
      <=>    [d aa^2 hB / c^5]^.5              -43.2677434  5.3982945931430236352448783579481e-44

 With GDA PL , PM , Pf , & G <=> d aa^2 :  G   -10.1744595  6.691 7625607236771532518785030144e-11            m^3 kg^-1 s^-2
 should be identical to          c^2 PL / PM   -10.1744594
 and                             PL / PM d k   -10.1744594
 and                          PL^3 Pf^2 / PM   -10.1744594
 and                          PL^2 Pf c / PM   -10.1744594
 and                          hB / k z0 PM^2   -10.1744593
 and                     c^2 PL^2 / a0 Me aa   -10.1744594
 and                     Me a0 aa c^2 / PM^2   -10.1744594
 and               d Q0^2 c^2 / 4 Pi aa PM^2   -10.1744593
 and   Q0^2 c^2 PL^2 d / 4 Pi aa^3 Me^2 a0^2   -10.1744593

 and  has units that differ from
      the quantity                    d aa^2   -10.1744595  6.691 7625607236771532518785030144e-11            N A^-2
    which is identical to         k v0^2 d^2   -10.1744595  6.691 7625600411219841038928336969e-11
and                              k z0^2 aa^2   -10.1744595  6.691 7625604186893589242823760685e-11
and                              z0 aa^2 / c   -10.1744595  6.691 7625609012526634826076975594e-11
and                             aa^2 / k c^2   -10.1744595  6.691 7625613838159680757321232929e-11
and                            4 k aa^4 RK^2   -10.1744595  6.691 7625604813547985762720297462e-11
or                      4 k aa^4 (conv RK)^2   -10.1744595  6.691 7623243119397002585694644246e-11
and                         4 Pi aa^2 / 10^7   -10.1744595  6.691 7625609149416160971887140931e-11
and                      4 Pi aa^4 Fe / i0^2   -10.1744595  6.691 7625571123635330894483870268e-11
and                        k d^2 E0^2 / B0^2   -10.1744595  6.691 762559722172207567881147985e-11
and                        aa He a0 d / hB c   -10.1744595  6.691 7625615734164608312074971385e-11
and                        d E0^2 / c^2 B0^2   -10.1744595  6.691 7625603823110222929368384379e-11
and                        4 B0 w0 aa^4 / Fe   -10.1744595  6.691 7625649982925856869048914192e-11
and                    Q0^2 d^2 / 4 Pi Me a0   -10.1744595  6.691 7625588350790020051584547732e-11
and                   4 Pi Me a0 aa^4 / Q0^2   -10.1744595  6.691 7625626122753050316125285946e-11
and               aa d Q0 / 4 Pi B0 k c a0^2   -10.1744595  6.691 7625610022118789173328297429e-11
and               4 aa^2 / Pi Me a0 Jf^2 c^2   -10.1744595  6.691 7625584924560406192282800034e-11
or         4 aa^2 / Pi Me a0 (conv Jf)^2 c^2   -10.1744597  6.691 7612439346140069109713283723e-11
and                  d^2 Fe / 4 Pi a0^2 B0^2   -10.1744595  6.691 7625558857600534065915480928e-11
-----------------------------------------------------------------------------------------------------------------------------

          Raw download from NIST June 1 2017 as allascin.txt :

    Fundamental Physical Constants --- Complete Listing      From:  http://physics.nist.gov/constants

  Quantity                                                       Value                 Uncertainty           Unit
-----------------------------------------------------------------------------------------------------------------------------
{220} lattice spacing of silicon                            192.015 5714 e-12        0.000 0032 e-12          m
alpha particle-electron mass ratio                          7294.299 541 36          0.000 000 24             
alpha particle mass                                         6.644 657 230 e-27       0.000 000 082 e-27       kg
alpha particle mass energy equivalent                       5.971 920 097 e-10       0.000 000 073 e-10       J
alpha particle mass energy equivalent in MeV                3727.379 378             0.000 023                MeV
alpha particle mass in u                                    4.001 506 179 127        0.000 000 000 063        u
alpha particle molar mass                                   4.001 506 179 127 e-3    0.000 000 000 063 e-3    kg mol^-1
alpha particle-proton mass ratio                            3.972 599 689 07         0.000 000 000 36         
Angstrom star                                               1.000 014 95 e-10        0.000 000 90 e-10        m
atomic mass constant                                        1.660 539 040 e-27       0.000 000 020 e-27       kg
atomic mass constant energy equivalent                      1.492 418 062 e-10       0.000 000 018 e-10       J
atomic mass constant energy equivalent in MeV               931.494 0954             0.000 0057               MeV
atomic mass unit-electron volt relationship                 931.494 0954 e6          0.000 0057 e6            eV
atomic mass unit-hartree relationship                       3.423 177 6902 e7        0.000 000 0016 e7        E_h
atomic mass unit-hertz relationship                         2.252 342 7206 e23       0.000 000 0010 e23       Hz
atomic mass unit-inverse meter relationship                 7.513 006 6166 e14       0.000 000 0034 e14       m^-1
atomic mass unit-joule relationship                         1.492 418 062 e-10       0.000 000 018 e-10       J
atomic mass unit-kelvin relationship                        1.080 954 38 e13         0.000 000 62 e13         K
atomic mass unit-kilogram relationship                      1.660 539 040 e-27       0.000 000 020 e-27       kg
atomic unit of 1st hyperpolarizability                      3.206 361 329 e-53       0.000 000 020 e-53       C^3 m^3 J^-2
atomic unit of 2nd hyperpolarizability                      6.235 380 085 e-65       0.000 000 077 e-65       C^4 m^4 J^-3
atomic unit of action                                       1.054 571 800 e-34       0.000 000 013 e-34       J s
atomic unit of charge                                       1.602 176 6208 e-19      0.000 000 0098 e-19      C
atomic unit of charge density                               1.081 202 3770 e12       0.000 000 0067 e12       C m^-3
atomic unit of current                                      6.623 618 183 e-3        0.000 000 041 e-3        A
atomic unit of electric dipole mom.                         8.478 353 552 e-30       0.000 000 052 e-30       C m
atomic unit of electric field                               5.142 206 707 e11        0.000 000 032 e11        V m^-1
atomic unit of electric field gradient                      9.717 362 356 e21        0.000 000 060 e21        V m^-2
atomic unit of electric polarizability                      1.648 777 2731 e-41      0.000 000 0011 e-41      C^2 m^2 J^-1
atomic unit of electric potential                           27.211 386 02            0.000 000 17             V
atomic unit of electric quadrupole mom.                     4.486 551 484 e-40       0.000 000 028 e-40       C m^2
atomic unit of energy                                       4.359 744 650 e-18       0.000 000 054 e-18       J
atomic unit of force                                        8.238 723 36 e-8         0.000 000 10 e-8         N
atomic unit of length                                       0.529 177 210 67 e-10    0.000 000 000 12 e-10    m
atomic unit of mag. dipole mom.                             1.854 801 999 e-23       0.000 000 011 e-23       J T^-1
atomic unit of mag. flux density                            2.350 517 550 e5         0.000 000 014 e5         T
atomic unit of magnetizability                              7.891 036 5886 e-29      0.000 000 0090 e-29      J T^-2
atomic unit of mass                                         9.109 383 56 e-31        0.000 000 11 e-31        kg
atomic unit of mom.um                                       1.992 851 882 e-24       0.000 000 024 e-24       kg m s^-1
atomic unit of permittivity                                 1.112 650 056... e-10    (exact)                  F m^-1
atomic unit of time                                         2.418 884 326 509 e-17   0.000 000 000 014 e-17   s
atomic unit of velocity                                     2.187 691 262 77 e6      0.000 000 000 50 e6      m s^-1
Avogadro constant                                           6.022 140 857 e23        0.000 000 074 e23        mol^-1
Bohr magneton                                               927.400 9994 e-26        0.000 0057 e-26          J T^-1
Bohr magneton in eV/T                                       5.788 381 8012 e-5       0.000 000 0026 e-5       eV T^-1
Bohr magneton in Hz/T                                       13.996 245 042 e9        0.000 000 086 e9         Hz T^-1
Bohr magneton in inverse meters per tesla                   46.686 448 14            0.000 000 29             m^-1 T^-1
Bohr magneton in K/T                                        0.671 714 05             0.000 000 39             K T^-1
Bohr radius                                                 0.529 177 210 67 e-10    0.000 000 000 12 e-10    m
Boltzmann constant                                          1.380 648 52 e-23        0.000 000 79 e-23        J K^-1
Boltzmann constant in eV/K                                  8.617 3303 e-5           0.000 0050 e-5           eV K^-1
Boltzmann constant in Hz/K                                  2.083 6612 e10           0.000 0012 e10           Hz K^-1
Boltzmann constant in inverse meters per kelvin             69.503 457               0.000 040                m^-1 K^-1
characteristic impedance of vacuum                          376.730 313 461...       (exact)                  ohm
classical electron radius                                   2.817 940 3227 e-15      0.000 000 0019 e-15      m
Compton wavelength                                          2.426 310 2367 e-12      0.000 000 0011 e-12      m
Compton wavelength over 2 pi                                386.159 267 64 e-15      0.000 000 18 e-15        m
conductance quantum                                         7.748 091 7310 e-5       0.000 000 0018 e-5       S
conventional value of Josephson constant                    483 597.9 e9             (exact)                  Hz V^-1
conventional value of von Klitzing constant                 25 812.807               (exact)                  ohm
Cu x unit                                                   1.002 076 97 e-13        0.000 000 28 e-13        m
deuteron-electron mag. mom. ratio                           -4.664 345 535 e-4       0.000 000 026 e-4        
deuteron-electron mass ratio                                3670.482 967 85          0.000 000 13             
deuteron g factor                                           0.857 438 2311           0.000 000 0048           
deuteron mag. mom.                                          0.433 073 5040 e-26      0.000 000 0036 e-26      J T^-1
deuteron mag. mom. to Bohr magneton ratio                   0.466 975 4554 e-3       0.000 000 0026 e-3       
deuteron mag. mom. to nuclear magneton ratio                0.857 438 2311           0.000 000 0048           
deuteron mass                                               3.343 583 719 e-27       0.000 000 041 e-27       kg
deuteron mass energy equivalent                             3.005 063 183 e-10       0.000 000 037 e-10       J
deuteron mass energy equivalent in MeV                      1875.612 928             0.000 012                MeV
deuteron mass in u                                          2.013 553 212 745        0.000 000 000 040        u
deuteron molar mass                                         2.013 553 212 745 e-3    0.000 000 000 040 e-3    kg mol^-1
deuteron-neutron mag. mom. ratio                            -0.448 206 52            0.000 000 11             
deuteron-proton mag. mom. ratio                             0.307 012 2077           0.000 000 0015           
deuteron-proton mass ratio                                  1.999 007 500 87         0.000 000 000 19         
deuteron rms charge radius                                  2.1413 e-15              0.0025 e-15              m
electric constant                                           8.854 187 817... e-12    (exact)                  F m^-1
electron charge to mass quotient                            -1.758 820 024 e11       0.000 000 011 e11        C kg^-1
electron-deuteron mag. mom. ratio                           -2143.923 499            0.000 012                
electron-deuteron mass ratio                                2.724 437 107 484 e-4    0.000 000 000 096 e-4    
electron g factor                                           -2.002 319 304 361 82    0.000 000 000 000 52     
electron gyromag. ratio                                     1.760 859 644 e11        0.000 000 011 e11        s^-1 T^-1
electron gyromag. ratio over 2 pi                           28 024.951 64            0.000 17                 MHz T^-1
electron-helion mass ratio                                  1.819 543 074 854 e-4    0.000 000 000 088 e-4    
electron mag. mom.                                          -928.476 4620 e-26       0.000 0057 e-26          J T^-1
electron mag. mom. anomaly                                  1.159 652 180 91 e-3     0.000 000 000 26 e-3     
electron mag. mom. to Bohr magneton ratio                   -1.001 159 652 180 91    0.000 000 000 000 26     
electron mag. mom. to nuclear magneton ratio                -1838.281 972 34         0.000 000 17             
electron mass                                               9.109 383 56 e-31        0.000 000 11 e-31        kg
electron mass energy equivalent                             8.187 105 65 e-14        0.000 000 10 e-14        J
electron mass energy equivalent in MeV                      0.510 998 9461           0.000 000 0031           MeV
electron mass in u                                          5.485 799 090 70 e-4     0.000 000 000 16 e-4     u
electron molar mass                                         5.485 799 090 70 e-7     0.000 000 000 16 e-7     kg mol^-1
electron-muon mag. mom. ratio                               206.766 9880             0.000 0046               
electron-muon mass ratio                                    4.836 331 70 e-3         0.000 000 11 e-3         
electron-neutron mag. mom. ratio                            960.920 50               0.000 23                 
electron-neutron mass ratio                                 5.438 673 4428 e-4       0.000 000 0027 e-4       
electron-proton mag. mom. ratio                             -658.210 6866            0.000 0020               
electron-proton mass ratio                                  5.446 170 213 52 e-4     0.000 000 000 52 e-4     
electron-tau mass ratio                                     2.875 92 e-4             0.000 26 e-4             
electron to alpha particle mass ratio                       1.370 933 554 798 e-4    0.000 000 000 045 e-4    
electron to shielded helion mag. mom. ratio                 864.058 257              0.000 010                
electron to shielded proton mag. mom. ratio                 -658.227 5971            0.000 0072               
electron-triton mass ratio                                  1.819 200 062 203 e-4    0.000 000 000 084 e-4    
electron volt                                               1.602 176 6208 e-19      0.000 000 0098 e-19      J
electron volt-atomic mass unit relationship                 1.073 544 1105 e-9       0.000 000 0066 e-9       u
electron volt-hartree relationship                          3.674 932 248 e-2        0.000 000 023 e-2        E_h
electron volt-hertz relationship                            2.417 989 262 e14        0.000 000 015 e14        Hz
electron volt-inverse meter relationship                    8.065 544 005 e5         0.000 000 050 e5         m^-1
electron volt-joule relationship                            1.602 176 6208 e-19      0.000 000 0098 e-19      J
electron volt-kelvin relationship                           1.160 452 21 e4          0.000 000 67 e4          K
electron volt-kilogram relationship                         1.782 661 907 e-36       0.000 000 011 e-36       kg
elementary charge                                           1.602 176 6208 e-19      0.000 000 0098 e-19      C
elementary charge over h                                    2.417 989 262 e14        0.000 000 015 e14        A J^-1
Faraday constant                                            96 485.332 89            0.000 59                 C mol^-1
Faraday constant for conventional electric current          96 485.3251              0.0012                   C_90 mol^-1
Fermi coupling constant                                     1.166 3787 e-5           0.000 0006 e-5           GeV^-2
fine-structure constant                                     7.297 352 5664 e-3       0.000 000 0017 e-3       
first radiation constant                                    3.741 771 790 e-16       0.000 000 046 e-16       W m^2
first radiation constant for spectral radiance              1.191 042 953 e-16       0.000 000 015 e-16       W m^2 sr^-1
hartree-atomic mass unit relationship                       2.921 262 3197 e-8       0.000 000 0013 e-8       u
hartree-electron volt relationship                          27.211 386 02            0.000 000 17             eV
Hartree energy                                              4.359 744 650 e-18       0.000 000 054 e-18       J
Hartree energy in eV                                        27.211 386 02            0.000 000 17             eV
hartree-hertz relationship                                  6.579 683 920 711 e15    0.000 000 000 039 e15    Hz
hartree-inverse meter relationship                          2.194 746 313 702 e7     0.000 000 000 013 e7     m^-1
hartree-joule relationship                                  4.359 744 650 e-18       0.000 000 054 e-18       J
hartree-kelvin relationship                                 3.157 7513 e5            0.000 0018 e5            K
hartree-kilogram relationship                               4.850 870 129 e-35       0.000 000 060 e-35       kg
helion-electron mass ratio                                  5495.885 279 22          0.000 000 27             
helion g factor                                             -4.255 250 616           0.000 000 050            
helion mag. mom.                                            -1.074 617 522 e-26      0.000 000 014 e-26       J T^-1
helion mag. mom. to Bohr magneton ratio                     -1.158 740 958 e-3       0.000 000 014 e-3        
helion mag. mom. to nuclear magneton ratio                  -2.127 625 308           0.000 000 025            
helion mass                                                 5.006 412 700 e-27       0.000 000 062 e-27       kg
helion mass energy equivalent                               4.499 539 341 e-10       0.000 000 055 e-10       J
helion mass energy equivalent in MeV                        2808.391 586             0.000 017                MeV
helion mass in u                                            3.014 932 246 73         0.000 000 000 12         u
helion molar mass                                           3.014 932 246 73 e-3     0.000 000 000 12 e-3     kg mol^-1
helion-proton mass ratio                                    2.993 152 670 46         0.000 000 000 29         
hertz-atomic mass unit relationship                         4.439 821 6616 e-24      0.000 000 0020 e-24      u
hertz-electron volt relationship                            4.135 667 662 e-15       0.000 000 025 e-15       eV
hertz-hartree relationship                                  1.519 829 846 0088 e-16  0.000 000 000 0090 e-16  E_h
hertz-inverse meter relationship                            3.335 640 951... e-9     (exact)                  m^-1
hertz-joule relationship                                    6.626 070 040 e-34       0.000 000 081 e-34       J
hertz-kelvin relationship                                   4.799 2447 e-11          0.000 0028 e-11          K
hertz-kilogram relationship                                 7.372 497 201 e-51       0.000 000 091 e-51       kg
inverse fine-structure constant                             137.035 999 139          0.000 000 031            
inverse meter-atomic mass unit relationship                 1.331 025 049 00 e-15    0.000 000 000 61 e-15    u
inverse meter-electron volt relationship                    1.239 841 9739 e-6       0.000 000 0076 e-6       eV
inverse meter-hartree relationship                          4.556 335 252 767 e-8    0.000 000 000 027 e-8    E_h
inverse meter-hertz relationship                            299 792 458              (exact)                  Hz
inverse meter-joule relationship                            1.986 445 824 e-25       0.000 000 024 e-25       J
inverse meter-kelvin relationship                           1.438 777 36 e-2         0.000 000 83 e-2         K
inverse meter-kilogram relationship                         2.210 219 057 e-42       0.000 000 027 e-42       kg
inverse of conductance quantum                              12 906.403 7278          0.000 0029               ohm
Josephson constant                                          483 597.8525 e9          0.0030 e9                Hz V^-1
joule-atomic mass unit relationship                         6.700 535 363 e9         0.000 000 082 e9         u
joule-electron volt relationship                            6.241 509 126 e18        0.000 000 038 e18        eV
joule-hartree relationship                                  2.293 712 317 e17        0.000 000 028 e17        E_h
joule-hertz relationship                                    1.509 190 205 e33        0.000 000 019 e33        Hz
joule-inverse meter relationship                            5.034 116 651 e24        0.000 000 062 e24        m^-1
joule-kelvin relationship                                   7.242 9731 e22           0.000 0042 e22           K
joule-kilogram relationship                                 1.112 650 056... e-17    (exact)                  kg
kelvin-atomic mass unit relationship                        9.251 0842 e-14          0.000 0053 e-14          u
kelvin-electron volt relationship                           8.617 3303 e-5           0.000 0050 e-5           eV
kelvin-hartree relationship                                 3.166 8105 e-6           0.000 0018 e-6           E_h
kelvin-hertz relationship                                   2.083 6612 e10           0.000 0012 e10           Hz
kelvin-inverse meter relationship                           69.503 457               0.000 040                m^-1
kelvin-joule relationship                                   1.380 648 52 e-23        0.000 000 79 e-23        J
kelvin-kilogram relationship                                1.536 178 65 e-40        0.000 000 88 e-40        kg
kilogram-atomic mass unit relationship                      6.022 140 857 e26        0.000 000 074 e26        u
kilogram-electron volt relationship                         5.609 588 650 e35        0.000 000 034 e35        eV
kilogram-hartree relationship                               2.061 485 823 e34        0.000 000 025 e34        E_h
kilogram-hertz relationship                                 1.356 392 512 e50        0.000 000 017 e50        Hz
kilogram-inverse meter relationship                         4.524 438 411 e41        0.000 000 056 e41        m^-1
kilogram-joule relationship                                 8.987 551 787... e16     (exact)                  J
kilogram-kelvin relationship                                6.509 6595 e39           0.000 0037 e39           K
lattice parameter of silicon                                543.102 0504 e-12        0.000 0089 e-12          m
Loschmidt constant (273.15 K, 100 kPa)                      2.651 6467 e25           0.000 0015 e25           m^-3
Loschmidt constant (273.15 K, 101.325 kPa)                  2.686 7811 e25           0.000 0015 e25           m^-3
mag. constant                                               12.566 370 614... e-7    (exact)                  N A^-2
mag. flux quantum                                           2.067 833 831 e-15       0.000 000 013 e-15       Wb
molar gas constant                                          8.314 4598               0.000 0048               J mol^-1 K^-1
molar mass constant                                         1 e-3                    (exact)                  kg mol^-1
molar mass of carbon-12                                     12 e-3                   (exact)                  kg mol^-1
molar Planck constant                                       3.990 312 7110 e-10      0.000 000 0018 e-10      J s mol^-1
molar Planck constant times c                               0.119 626 565 582        0.000 000 000 054        J m mol^-1
molar volume of ideal gas (273.15 K, 100 kPa)               22.710 947 e-3           0.000 013 e-3            m^3 mol^-1
molar volume of ideal gas (273.15 K, 101.325 kPa)           22.413 962 e-3           0.000 013 e-3            m^3 mol^-1
molar volume of silicon                                     12.058 832 14 e-6        0.000 000 61 e-6         m^3 mol^-1
Mo x unit                                                   1.002 099 52 e-13        0.000 000 53 e-13        m
muon Compton wavelength                                     11.734 441 11 e-15       0.000 000 26 e-15        m
muon Compton wavelength over 2 pi                           1.867 594 308 e-15       0.000 000 042 e-15       m
muon-electron mass ratio                                    206.768 2826             0.000 0046               
muon g factor                                               -2.002 331 8418          0.000 000 0013           
muon mag. mom.                                              -4.490 448 26 e-26       0.000 000 10 e-26        J T^-1
muon mag. mom. anomaly                                      1.165 920 89 e-3         0.000 000 63 e-3         
muon mag. mom. to Bohr magneton ratio                       -4.841 970 48 e-3        0.000 000 11 e-3         
muon mag. mom. to nuclear magneton ratio                    -8.890 597 05            0.000 000 20             
muon mass                                                   1.883 531 594 e-28       0.000 000 048 e-28       kg
muon mass energy equivalent                                 1.692 833 774 e-11       0.000 000 043 e-11       J
muon mass energy equivalent in MeV                          105.658 3745             0.000 0024               MeV
muon mass in u                                              0.113 428 9257           0.000 000 0025           u
muon molar mass                                             0.113 428 9257 e-3       0.000 000 0025 e-3       kg mol^-1
muon-neutron mass ratio                                     0.112 454 5167           0.000 000 0025           
muon-proton mag. mom. ratio                                 -3.183 345 142           0.000 000 071            
muon-proton mass ratio                                      0.112 609 5262           0.000 000 0025           
muon-tau mass ratio                                         5.946 49 e-2             0.000 54 e-2             
natural unit of action                                      1.054 571 800 e-34       0.000 000 013 e-34       J s
natural unit of action in eV s                              6.582 119 514 e-16       0.000 000 040 e-16       eV s
natural unit of energy                                      8.187 105 65 e-14        0.000 000 10 e-14        J
natural unit of energy in MeV                               0.510 998 9461           0.000 000 0031           MeV
natural unit of length                                      386.159 267 64 e-15      0.000 000 18 e-15        m
natural unit of mass                                        9.109 383 56 e-31        0.000 000 11 e-31        kg
natural unit of mom.um                                      2.730 924 488 e-22       0.000 000 034 e-22       kg m s^-1
natural unit of mom.um in MeV/c                             0.510 998 9461           0.000 000 0031           MeV/c
natural unit of time                                        1.288 088 667 12 e-21    0.000 000 000 58 e-21    s
natural unit of velocity                                    299 792 458              (exact)                  m s^-1
neutron Compton wavelength                                  1.319 590 904 81 e-15    0.000 000 000 88 e-15    m
neutron Compton wavelength over 2 pi                        0.210 019 415 36 e-15    0.000 000 000 14 e-15    m
neutron-electron mag. mom. ratio                            1.040 668 82 e-3         0.000 000 25 e-3         
neutron-electron mass ratio                                 1838.683 661 58          0.000 000 90             
neutron g factor                                            -3.826 085 45            0.000 000 90             
neutron gyromag. ratio                                      1.832 471 72 e8          0.000 000 43 e8          s^-1 T^-1
neutron gyromag. ratio over 2 pi                            29.164 6933              0.000 0069               MHz T^-1
neutron mag. mom.                                           -0.966 236 50 e-26       0.000 000 23 e-26        J T^-1
neutron mag. mom. to Bohr magneton ratio                    -1.041 875 63 e-3        0.000 000 25 e-3         
neutron mag. mom. to nuclear magneton ratio                 -1.913 042 73            0.000 000 45             
neutron mass                                                1.674 927 471 e-27       0.000 000 021 e-27       kg
neutron mass energy equivalent                              1.505 349 739 e-10       0.000 000 019 e-10       J
neutron mass energy equivalent in MeV                       939.565 4133             0.000 0058               MeV
neutron mass in u                                           1.008 664 915 88         0.000 000 000 49         u
neutron molar mass                                          1.008 664 915 88 e-3     0.000 000 000 49 e-3     kg mol^-1
neutron-muon mass ratio                                     8.892 484 08             0.000 000 20             
neutron-proton mag. mom. ratio                              -0.684 979 34            0.000 000 16             
neutron-proton mass difference                              2.305 573 77 e-30        0.000 000 85 e-30        
neutron-proton mass difference energy equivalent            2.072 146 37 e-13        0.000 000 76 e-13        
neutron-proton mass difference energy equivalent in MeV     1.293 332 05             0.000 000 48             
neutron-proton mass difference in u                         0.001 388 449 00         0.000 000 000 51         
neutron-proton mass ratio                                   1.001 378 418 98         0.000 000 000 51         
neutron-tau mass ratio                                      0.528 790                0.000 048                
neutron to shielded proton mag. mom. ratio                  -0.684 996 94            0.000 000 16             
Newtonian constant of gravitation                           6.674 08 e-11            0.000 31 e-11            m^3 kg^-1 s^-2
Newtonian constant of gravitation over h-bar c              6.708 61 e-39            0.000 31 e-39            (GeV/c^2)^-2
nuclear magneton                                            5.050 783 699 e-27       0.000 000 031 e-27       J T^-1
nuclear magneton in eV/T                                    3.152 451 2550 e-8       0.000 000 0015 e-8       eV T^-1
nuclear magneton in inverse meters per tesla                2.542 623 432 e-2        0.000 000 016 e-2        m^-1 T^-1
nuclear magneton in K/T                                     3.658 2690 e-4           0.000 0021 e-4           K T^-1
nuclear magneton in MHz/T                                   7.622 593 285            0.000 000 047            MHz T^-1
Planck constant                                             6.626 070 040 e-34       0.000 000 081 e-34       J s
Planck constant in eV s                                     4.135 667 662 e-15       0.000 000 025 e-15       eV s
Planck constant over 2 pi                                   1.054 571 800 e-34       0.000 000 013 e-34       J s
Planck constant over 2 pi in eV s                           6.582 119 514 e-16       0.000 000 040 e-16       eV s
Planck constant over 2 pi times c in MeV fm                 197.326 9788             0.000 0012               MeV fm
Planck length                                               1.616 229 e-35           0.000 038 e-35           m
Planck mass                                                 2.176 470 e-8            0.000 051 e-8            kg
Planck mass energy equivalent in GeV                        1.220 910 e19            0.000 029 e19            GeV
Planck temperature                                          1.416 808 e32            0.000 033 e32            K
Planck time                                                 5.391 16 e-44            0.000 13 e-44            s
proton charge to mass quotient                              9.578 833 226 e7         0.000 000 059 e7         C kg^-1
proton Compton wavelength                                   1.321 409 853 96 e-15    0.000 000 000 61 e-15    m
proton Compton wavelength over 2 pi                         0.210 308 910 109 e-15   0.000 000 000 097 e-15   m
proton-electron mass ratio                                  1836.152 673 89          0.000 000 17             
proton g factor                                             5.585 694 702            0.000 000 017            
proton gyromag. ratio                                       2.675 221 900 e8         0.000 000 018 e8         s^-1 T^-1
proton gyromag. ratio over 2 pi                             42.577 478 92            0.000 000 29             MHz T^-1
proton mag. mom.                                            1.410 606 7873 e-26      0.000 000 0097 e-26      J T^-1
proton mag. mom. to Bohr magneton ratio                     1.521 032 2053 e-3       0.000 000 0046 e-3       
proton mag. mom. to nuclear magneton ratio                  2.792 847 3508           0.000 000 0085           
proton mag. shielding correction                            25.691 e-6               0.011 e-6                
proton mass                                                 1.672 621 898 e-27       0.000 000 021 e-27       kg
proton mass energy equivalent                               1.503 277 593 e-10       0.000 000 018 e-10       J
proton mass energy equivalent in MeV                        938.272 0813             0.000 0058               MeV
proton mass in u                                            1.007 276 466 879        0.000 000 000 091        u
proton molar mass                                           1.007 276 466 879 e-3    0.000 000 000 091 e-3    kg mol^-1
proton-muon mass ratio                                      8.880 243 38             0.000 000 20             
proton-neutron mag. mom. ratio                              -1.459 898 05            0.000 000 34             
proton-neutron mass ratio                                   0.998 623 478 44         0.000 000 000 51         
proton rms charge radius                                    0.8751 e-15              0.0061 e-15              m
proton-tau mass ratio                                       0.528 063                0.000 048                
quantum of circulation                                      3.636 947 5486 e-4       0.000 000 0017 e-4       m^2 s^-1
quantum of circulation times 2                              7.273 895 0972 e-4       0.000 000 0033 e-4       m^2 s^-1
Rydberg constant                                            10 973 731.568 508       0.000 065                m^-1
Rydberg constant times c in Hz                              3.289 841 960 355 e15    0.000 000 000 019 e15    Hz
Rydberg constant times hc in eV                             13.605 693 009           0.000 000 084            eV
Rydberg constant times hc in J                              2.179 872 325 e-18       0.000 000 027 e-18       J
Sackur-Tetrode constant (1 K, 100 kPa)                      -1.151 7084              0.000 0014               
Sackur-Tetrode constant (1 K, 101.325 kPa)                  -1.164 8714              0.000 0014               
second radiation constant                                   1.438 777 36 e-2         0.000 000 83 e-2         m K
shielded helion gyromag. ratio                              2.037 894 585 e8         0.000 000 027 e8         s^-1 T^-1
shielded helion gyromag. ratio over 2 pi                    32.434 099 66            0.000 000 43             MHz T^-1
shielded helion mag. mom.                                   -1.074 553 080 e-26      0.000 000 014 e-26       J T^-1
shielded helion mag. mom. to Bohr magneton ratio            -1.158 671 471 e-3       0.000 000 014 e-3        
shielded helion mag. mom. to nuclear magneton ratio         -2.127 497 720           0.000 000 025            
shielded helion to proton mag. mom. ratio                   -0.761 766 5603          0.000 000 0092           
shielded helion to shielded proton mag. mom. ratio          -0.761 786 1313          0.000 000 0033           
shielded proton gyromag. ratio                              2.675 153 171 e8         0.000 000 033 e8         s^-1 T^-1
shielded proton gyromag. ratio over 2 pi                    42.576 385 07            0.000 000 53             MHz T^-1
shielded proton mag. mom.                                   1.410 570 547 e-26       0.000 000 018 e-26       J T^-1
shielded proton mag. mom. to Bohr magneton ratio            1.520 993 128 e-3        0.000 000 017 e-3        
shielded proton mag. mom. to nuclear magneton ratio         2.792 775 600            0.000 000 030            
speed of light in vacuum                                    299 792 458              (exact)                  m s^-1
standard acceleration of gravity                            9.806 65                 (exact)                  m s^-2
standard atmosphere                                         101 325                  (exact)                  Pa
standard-state pressure                                     100 000                  (exact)                  Pa
Stefan-Boltzmann constant                                   5.670 367 e-8            0.000 013 e-8            W m^-2 K^-4
tau Compton wavelength                                      0.697 787 e-15           0.000 063 e-15           m
tau Compton wavelength over 2 pi                            0.111 056 e-15           0.000 010 e-15           m
tau-electron mass ratio                                     3477.15                  0.31                     
tau mass                                                    3.167 47 e-27            0.000 29 e-27            kg
tau mass energy equivalent                                  2.846 78 e-10            0.000 26 e-10            J
tau mass energy equivalent in MeV                           1776.82                  0.16                     MeV
tau mass in u                                               1.907 49                 0.000 17                 u
tau molar mass                                              1.907 49 e-3             0.000 17 e-3             kg mol^-1
tau-muon mass ratio                                         16.8167                  0.0015                   
tau-neutron mass ratio                                      1.891 11                 0.000 17                 
tau-proton mass ratio                                       1.893 72                 0.000 17                 
Thomson cross section                                       0.665 245 871 58 e-28    0.000 000 000 91 e-28    m^2
triton-electron mass ratio                                  5496.921 535 88          0.000 000 26             
triton g factor                                             5.957 924 920            0.000 000 028            
triton mag. mom.                                            1.504 609 503 e-26       0.000 000 012 e-26       J T^-1
triton mag. mom. to Bohr magneton ratio                     1.622 393 6616 e-3       0.000 000 0076 e-3       
triton mag. mom. to nuclear magneton ratio                  2.978 962 460            0.000 000 014            
triton mass                                                 5.007 356 665 e-27       0.000 000 062 e-27       kg
triton mass energy equivalent                               4.500 387 735 e-10       0.000 000 055 e-10       J
triton mass energy equivalent in MeV                        2808.921 112             0.000 017                MeV
triton mass in u                                            3.015 500 716 32         0.000 000 000 11         u
triton molar mass                                           3.015 500 716 32 e-3     0.000 000 000 11 e-3     kg mol^-1
triton-proton mass ratio                                    2.993 717 033 48         0.000 000 000 22         
unified atomic mass unit                                    1.660 539 040 e-27       0.000 000 020 e-27       kg
von Klitzing constant                                       25 812.807 4555          0.000 0059               ohm
weak mixing angle                                           0.2223                   0.0021                   
Wien frequency displacement law constant                    5.878 9238 e10           0.000 0034 e10           Hz K^-1
Wien wavelength displacement law constant                   2.897 7729 e-3           0.000 0017 e-3           m K
----------------------------------------------------- -----------------------------------------------------

   Except where ***** noted *****, values below are quoted or calculated using CODATA 2010 values
    from NIST's allascii.txt verified at http://physics.nist.gov/constants on 17 June 2013
    (unaltered text, as downloaded, can be found below3)

                                   See complete GDA symbol and label key

         using log(base 10), to get POWER OF TEN : calc log of Value, then round off to 7th decimal place
----------------------------------------------------- -----------------------------------------------------
  Quantity                   GDA SYMBOL  POWER OF TEN    Value                 Uncertainty          Unit
-----------------------------------------------------------------------------------------------------------
Avogadro constant                      An  23.7797509  6.022 141 29 e23       0.000 000 27 e23       mol^-1
Bohr magneton                          Bm -23.0327325  927.400 968 e-26       0.000 020 e-26         J T^-1
Boltzmann constant                     Bk -22.8599168  1.380 6488 e-23        0.000 0013 e-23        J K^-1
characteristic impedance of vacuum     z0   2.5760306  376.730 313 461...     (exact)                ohm
classical electron radius              Re -14.5500682  2.817 940 3267 e-15    0.000 000 0027 e-15    m
Compton wavelength                     Cw -11.6150537  2.426 310 2389 e-12    0.000 000 0016 e-12    m
conductance quantum                    G0  -4.1108052  7.748 091 7346 e-5     0.000 000 0025 e-5     S
electric constant                       k -11.0528513  8.854 187 817... e-12  (exact)                F m^-1
electron volt                          eV -18.7952896  1.602 176 565 e-19     0.000 000 035 e-19     J
Faraday constant                            4.9844613  96 485.3365            0.0021               C mol^-1
Faraday constant for conventional current   4.9844613  96 485.3321            0.0043            C_90 mol^-1
fine-structure constant                aa  -2.1368347  7.297 352 5698 e-3     0.000 000 0024 e-3
Josephson constant                     Jf  14.6844844  483 597.891 e9         0.011 e9              Hz V^-1
conventional Josephson constant        Jf  14.6844844  483 597.9 e9           (exact)               Hz V^-1
magnetic constant                       d  -5.9007901  12.566 370 614... e-7  (exact)                N A^-2
magnetic flux quantum                  w0 -14.6844844  2.067 833 758 e-15     0.000 000 046 e-15     Wb
natural unit of energy             Me c^2 -13.0868696  8.187 105 06 e-14      0.000 000 36 e-14      J
natural unit of length           Cw / 2Pi -12.4132335  386.159 268 00 e-15    0.000 000 25 e-15      m
natural unit of mass                   Me -30.0405110  9.109 382 91 e-31      0.000 000 40 e-31      kg
natural unit of momentum             Me c -21.5636903  2.730 924 29 e-22      0.000 000 12 e-22   kg m s^-1
natural unit of time          hB / Me c^2 -20.8900542  1.288 088 668 33 e-21  0.000 000 000 83 e-21  s
natural unit of velocity                c   8.4768207  299 792 458            (exact)                m s^-1
nuclear magneton                       Nm -26.2966412  5.050 783 53 e-27      0.000 000 11 e-27      J T^-1
Planck constant                         h -33.1787440  6.626 069 57 e-34      0.000 000 29 e-34      J s
quantum of circulation                 cQ  -3.4392630  3.636 947 5520 e-4     0.000 000 0024 e-4   m^2 s^-1
Rydberg constant                       Rc   7.0403543  10 973 731.568 539     0.000 055              m^-1
speed of light in vacuum                c   8.4768207  299 792 458            (exact)                m s^-1
standard acceleration of gravity        g   0.9915207  9.806 65               (exact)                m s^-2
standard atmosphere                         5.0057166  101 325                (exact)                Pa
Stefan-Boltzmann constant                  -7.2463884  5.670 373 e-8          0.000 021 e-8     W m^-2 K^-4
Thomson cross section                  Tc -28.1770178  0.665 245 8734 e-28    0.000 000 0013 e-28    m^2

von Klitzing constant                  RK   4.4118352  25 812.807 4434        0.000 0084             ohm
conventional von Klitzing constant     RK   4.4118352  25 812.807             (exact)                ohm

           Q0 / {(4/3) Pi a0^3 10^7}        4.4118184  25 811.804 483 865718691003779202917          C m^-3

1st rad const for spectral radiance       -15.9240726  1.191 042 869 e-16   0.000 000 053 e-16  W m^2 sr^-1
1st radiation constant                    -15.4269227  3.741 771 53 e-16      0.000 000 17 e-16      W m^2
second radiation constant                  -1.8420065  1.438 7770 e-2         0.000 0013 e-2         m K

Planck constant over 2 pi :            hB -33.9769239  1.054 571 726 e-34     0.000 000 047 e-34     J s
 Casio fx-260solar calculator     h / 2Pi -33.9769239  1.054 571 725                                 J s
     WINnt virtual calculator     h / 2Pi -33.9769239  1.054 571 7253362893979631332573497e-34       J s
                                  PM PL c -33.9769238  1.054 571 92069798283442e-34                  J s
 for AUN = atomic unit of
AUN action = Planck constant / 2Pi  =  hB -33.9769239  1.054 571 726 e-34     0.000 000 047 e-34     J s
AUN electric polarizablity            18P -40.7828380  1.648 777 2754 e-41 0.000 000 0016 e-41 C^2 m^2 J^-1
AUN 1st hyperpolarizablity            19H -52.4939875  3.206 361 449 e-53   0.000 000 071 e-53 C^3 m^3 J^-2
AUN 2nd hyperpolarizablity            20H -64.2051370  6.235 380 54 e-65     0.000 000 28 e-65 C^4 m^4 J^-3
AUN charge = elementary charge         Q0 -18.7952896  1.602 176 565 e-19     0.000 000 035 e-19     C
AUN charge density                    QD0  12.0339070  1.081 202 338 e12      0.000 000 024 e12      C m^-3
AUN current                            i0  -2.1789047  6.623 617 95 e-3       0.000 000 15 e-3       A
AUN electric dipole moment             q0 -29.0716885  8.478 353 26 e-30      0.000 000 19 e-30      C m
AUN electric field                     E0  11.7111495  5.142 206 52 e11       0.000 000 11 e11       V m^-1
AUN electric field gradient           Eg0  21.9875484  9.717 362 00 e21       0.000 000 21 e21       V m^-2
AUN electric potential                Vt0   1.4347506  27.211 385 05          0.000 000 60           V
AUN electric quadrupole moment        qD0 -39.3480874  4.486 551 331 e-40     0.000 000 099 e-40     C m^2
AUN energy = Hartree energy            He -17.3605390  4.359 744 34 e-18      0.000 000 19 e-18      J
AUN force                              Fe  -7.0841401  8.238 722 78 e-8       0.000 000 36 e-8       N
AUN length = Bohr radius               a0 -10.2763989  0.529 177 210 92 e-10  0.000 000 000 17 e-10  m
AUN magnetic dipole moment             u0 -22.7317025  1.854 801 936 e-23     0.000 000 041 e-23     J T^-1
AUN magnetic flux density              B0   5.3711635  2.350 517 464 e5       0.000 000 052 e5       T
AUN magnetizability                   23M -28.1028659  7.891 036 607 e-29     0.000 000 013 e-29     J T^-2
AUN mass = electron mass               Me -30.0405110  9.109 382 91 e-31      0.000 000 40 e-31      kg
AUN momentum                           p0 -23.7005250  1.992 851 740 e-24     0.000 000 088 e-24  kg m s^-1
AUN permittivity                   1 / Ke  -9.9536414  1.112 650 056... e-10  (exact)                F m^-1
AUN time                          1 / 2af -16.6163849  2.418 884 326 502 e-17 0.000 000 000 012 e-17 s
AUN velocity                           v0   6.3399860  2.187 691 263 79 e6    0.000 000 000 71 e6    m s^-1

electron mass = AUN mass               Me -30.0405110  9.109 382 91 e-31      0.000 000 40 e-31      kg
electron charge to mass ratio     Q0 / Me  11.2452214  -1.758 820 088 e11     0.000 000 039 e11     C kg^-1
electron g factor               2 ue / Bm   0.3015333  -2.002 319 304 361 53  0.000 000 000 000 53
electron gyromagnetic ratio           Gye  11.2457248  1.760 859 708 e11      0.000 000 039 e11   s^-1 T^-1
electron magnetic moment               ue -23.0322291  -928.476 430 e-26      0.000 021 e-26         J T^-1
elec mag mom anomaly                  mma  -2.9356723  1.159 652 180 76 e-3   0.000 000 000 27 e-3
proton mass                            Mp -26.7766023  1.672 621 777 e-27     0.000 000 074 e-27     kg
proton charge to mass ratio       Q0 / Mp   7.9813126  9.578 833 58 e7        0.000 000 21 e7       C kg^-1
proton gyromagnetic ratio             Gyp   8.4273598  2.675 222 005 e8       0.000 000 063 e8    s^-1 T^-1
proton magnetic moment                 up -25.8505940  1.410 606 743 e-26     0.000 000 033 e-26     J T^-1
proton Compton wavelength              Rp -14.8789625  1.321 409 856 23 e-15  0.000 000 000 94 e-15  m
proton g factor                             0.7470772  5.585 694 713          0.000 000 046
proton rms charge radius                  -15.0567529  0.8775 e-15            0.0051 e-15            m
neutron mass                           Mn -26.7760040  1.674 927 351 e-27     0.000 000 074 e-27     kg
neutron gyromagnetic ratio            Gyn   8.2630373  1.832 471 79 e8        0.000 000 43 e8     s^-1 T^-1
neutron magnetic moment                un -26.0149166  -0.966 236 47 e-26     0.000 000 23 e-26      J T^-1
neutron Compton wavelength             Rn -14.8795607  1.319 590 9068 e-15    0.000 000 0011 e-15    m
neutron g factor                            0.5827547  -3.826 085 45          0.000 000 90

Planck length                          PL -34.7915052  1.616 199 e-35         0.000 097 e-35         m
             [G hB / c^3]^.5              -34.7915051  1.616 199 2562119243723875266159788e-35       m
Planck mass                            PM - 7.6622393  2.176 51 e-8           0.000 13 e-8           kg
             [hB c / G]^.5                - 7.6622395  2.176 5092531302216066904738870647e-8         kg
Planck time                   1 / Pf = PT -43.2683258  5.391 06 e-44          0.000 32 e-44          s
             [G hB / c^5]^.5              -43.2683258  5.391 060 4255825687662480375539627e-44       s
Planck temperature                     PK  32.1513187  1.416 833 e32          0.000 085 e32          K
                        PM PL^2 Pf^2 / Bk  32.1513188  1.416 833 3921787255587905367336895e+32       K

[Planck charge]          [hB c k]^.5 = PQ -18.2764772  5.290 817 4612569059120113206370525e-19       C
[Planck charge]^2           hB c k = PQ^2 -36.5529544  2.799 274 940834097109127325036e-37           C^2
                              k c^2 PM PL -36.5529544  2.799 275 4576440692924125614068367e-37       C^2
                                PM PL / d -36.5529544  2.799 275 4579202163263525724309821e-37       C^2

[Planck current]      Pf [hB c k]^.5 = PC  24.9918486  9.814 057 8283157265475875198878118e+24       A
[Planck current]^2     k c^3 PM Pf = PC^2  49.9836973  9.631 575 6565528446206787855366261e+49       A^2
                              hB c k Pf^2  49.9836972  9.631 573 1118142951074399725253044e+49       A^2

AUN action = Planck constant/2Pi     = hB -33.9769239  1.054 571 726 e-34    0.000 000 047 e-34      J s
should be identical to            c PL PM -33.9769238  1.054 571 92069798283442e-34                  J s
and                            G PM^2 / c -33.9769236  1.054 572 4497533084704886071550206e-34       J s
and                          PL^2 PM / PT -33.9769238  1.054 571 8367696988180432048613816e-34       J s
and                          PM PL / z0 k -33.9769238  1.054 571 9207740312157472953518164e-34       J s

CODATA Newtonian const of gravitation   G -10.1756242  6.673 84 e-11         0.000 80 e-11     m^3 kg^-1 s^-2
should be identical to        PL c^2 / PM -10.1756244  6.673 836 651884282327902743382755e-11  m^3 kg^-1 s^-2
and                           PL / PM d k -10.1756244  6.673 836 6525426527613609260124319e-11 m^3 kg^-1 s^-2
and                        PL^3 / PM PT^2 -10.1756245  6.673 835 5896074954801059575392004e-11 m^3 kg^-1 s^-2
and                        hB / k z0 PM^2 -10.1756245  6.673 835 4202233837068824508021574e-11 m^3 kg^-1 s^-2
and                       c  PL^2 / PM PT -10.1756245  6.673 836 1207458677686342376126686e-11 m^3 kg^-1 s^-2
and                   Me a0 aa c^2 / PM^2 -10.1756245  6.673 835 4204966825342377674925323e-11 m^3 kg^-1 s^-2
and             d Q0^2 c^2 / 4 Pi aa PM^2 -10.1756245  6.673 835 4205851030764804976181499e-11 m^3 kg^-1 s^-2
and Q0^2 c^2 PL^2 d / 4 Pi aa^3 Me^2 a0^2 -10.1756243  6.673 837 8833605298994381375920396e-11 m^3 kg^-1 s^-2

 while, ********** projected by GDA, G as -10.1744595  6.691 762 5669593612605321891223256e-11 m^3 kg^-1 s^-2
 has units that differ from
 the quantity                      d aa^2 -10.1744595  6.691 762 5669593612605321891223256e-11     N A^-2
 which is identical to         k v0^2 d^2 -10.1744595  6.691 762 5662811229650382348349162e-11     N A^-2
and                           k z0^2 aa^2 -10.1744595  6.691 762 5666543734659203917068932e-11     N A^-2
and                           z0 aa^2 / c -10.1744595  6.691 762 5671369367709283911316843e-11     N A^-2
and                          aa^2 / k c^2 -10.1744595  6.691 762 5676195000759711896607504e-11     N A^-2
and                         4 k aa^4 RK^2 -10.1744595  6.691 762 566679067798827285921498e-11      N A^-2
or                   4 k aa^4 (conv RK)^2 -10.1744595  6.691 762 3367833074800317865316723e-11     N A^-2

and                      4 Pi aa^2 / 10^7 -10.1744595  6.691 762 5671506257235557281274521e-11     N A^-2
and                   4 Pi aa^4 Fe / i0^2 -10.1744595  6.691 762 5692828635064349673518837e-11     N A^-2

and                     k d^2 E0^2 / B0^2 -10.1744595  6.691 762 5626929992003178342268861e-11     N A^-2
and                     aa He a0 d / hB c -10.1744595  6.691 762 5615997337623174789566877e-11     N A^-2
and                     d E0^2 / c^2 B0^2 -10.1744595  6.691 762 5633531380153359604189063e-11     N A^-2
and                     4 B0 w0 aa^4 / Fe -10.1744595  6.691 762 5674917592800880456513556e-11     N A^-2
and                 Q0^2 d^2 / 4 Pi Me a0 -10.1744595  6.691 762 5670480193165748889998655e-11     N A^-2
and                4 Pi Me a0 aa^4 / Q0^2 -10.1744595  6.691 762 5668707032044906638607142e-11     N A^-2
and            aa d Q0 / 4 Pi B0 k c a0^2 -10.1744595  6.691 762 5695751982132622059326e-11        N A^-2
and            4 aa^2 / Pi Me a0 Jf^2 c^2 -10.1744595  6.691 761 9735736143481703932191647e-11     N A^-2
or      4 aa^2 / Pi Me a0 (conv Jf)^2 c^2 -10.1744595  6.691 761 7244995087668773960378053e-11     N A^-2

and               d^2 Fe / 4 Pi a0^2 B0^2 -10.1744595  6.691 762 5681400692266087862741539e-11     N A^-2
 =                    Fe / 4 Pi a0^2 H0^2 -10.1744595                                              N A^-2
 = (AUN force) / (area of a sphere with Bohr radius multiplied by the square of AUN magnetic field strength)
    for AUN magnetic field strength H0 = B0 / d

=============================================================================================================
  2010 CODATA allascii.txt as of 17 June 2013 from  http://physics.nist.gov/constants

      Fundamental Physical Constants --- Complete Listing     From:  http://physics.nist.gov/constants

  Quantity                                               Value                 Uncertainty          Unit
------------------------------------------------------------------------------------------------------------------------
{220} lattice spacing of silicon                       192.015 5714 e-12     0.000 0032 e-12       m
alpha particle-electron mass ratio                     7294.299 5361         0.000 0029            
alpha particle mass                                    6.644 656 75 e-27     0.000 000 29 e-27     kg
alpha particle mass energy equivalent                  5.971 919 67 e-10     0.000 000 26 e-10     J
alpha particle mass energy equivalent in MeV           3727.379 240          0.000 082             MeV
alpha particle mass in u                               4.001 506 179 125     0.000 000 000 062     u
alpha particle molar mass                              4.001 506 179 125 e-3 0.000 000 000 062 e-3 kg mol^-1
alpha particle-proton mass ratio                       3.972 599 689 33      0.000 000 000 36      
Angstrom star                                          1.000 014 95 e-10     0.000 000 90 e-10     m
atomic mass constant                                   1.660 538 921 e-27    0.000 000 073 e-27    kg
atomic mass constant energy equivalent                 1.492 417 954 e-10    0.000 000 066 e-10    J
atomic mass constant energy equivalent in MeV          931.494 061           0.000 021             MeV
atomic mass unit-electron volt relationship            931.494 061 e6        0.000 021 e6          eV
atomic mass unit-hartree relationship                  3.423 177 6845 e7     0.000 000 0024 e7     E_h
atomic mass unit-hertz relationship                    2.252 342 7168 e23    0.000 000 0016 e23    Hz
atomic mass unit-inverse meter relationship            7.513 006 6042 e14    0.000 000 0053 e14    m^-1
atomic mass unit-joule relationship                    1.492 417 954 e-10    0.000 000 066 e-10    J
atomic mass unit-kelvin relationship                   1.080 954 08 e13      0.000 000 98 e13      K
atomic mass unit-kilogram relationship                 1.660 538 921 e-27    0.000 000 073 e-27    kg
atomic unit of 1st hyperpolarizability                 3.206 361 449 e-53    0.000 000 071 e-53    C^3 m^3 J^-2
atomic unit of 2nd hyperpolarizability                 6.235 380 54 e-65     0.000 000 28 e-65     C^4 m^4 J^-3
atomic unit of action                                  1.054 571 726 e-34    0.000 000 047 e-34    J s
atomic unit of charge                                  1.602 176 565 e-19    0.000 000 035 e-19    C
atomic unit of charge density                          1.081 202 338 e12     0.000 000 024 e12     C m^-3
atomic unit of current                                 6.623 617 95 e-3      0.000 000 15 e-3      A
atomic unit of electric dipole mom.                    8.478 353 26 e-30     0.000 000 19 e-30     C m
atomic unit of electric field                          5.142 206 52 e11      0.000 000 11 e11      V m^-1
atomic unit of electric field gradient                 9.717 362 00 e21      0.000 000 21 e21      V m^-2
atomic unit of electric polarizability                 1.648 777 2754 e-41   0.000 000 0016 e-41   C^2 m^2 J^-1
atomic unit of electric potential                      27.211 385 05         0.000 000 60          V
atomic unit of electric quadrupole mom.                4.486 551 331 e-40    0.000 000 099 e-40    C m^2
atomic unit of energy                                  4.359 744 34 e-18     0.000 000 19 e-18     J
atomic unit of force                                   8.238 722 78 e-8      0.000 000 36 e-8      N
atomic unit of length                                  0.529 177 210 92 e-10 0.000 000 000 17 e-10 m
atomic unit of mag. dipole mom.                        1.854 801 936 e-23    0.000 000 041 e-23    J T^-1
atomic unit of mag. flux density                       2.350 517 464 e5      0.000 000 052 e5      T
atomic unit of magnetizability                         7.891 036 607 e-29    0.000 000 013 e-29    J T^-2
atomic unit of mass                                    9.109 382 91 e-31     0.000 000 40 e-31     kg
atomic unit of mom.um                                  1.992 851 740 e-24    0.000 000 088 e-24    kg m s^-1
atomic unit of permittivity                            1.112 650 056... e-10 (exact)               F m^-1
atomic unit of time                                    2.418 884 326 502 e-17 0.000 000 000 012 e-17 s
atomic unit of velocity                                2.187 691 263 79 e6   0.000 000 000 71 e6   m s^-1
Avogadro constant                                      6.022 141 29 e23      0.000 000 27 e23      mol^-1
Bohr magneton                                          927.400 968 e-26      0.000 020 e-26        J T^-1
Bohr magneton in eV/T                                  5.788 381 8066 e-5    0.000 000 0038 e-5    eV T^-1
Bohr magneton in Hz/T                                  13.996 245 55 e9      0.000 000 31 e9       Hz T^-1
Bohr magneton in inverse meters per tesla              46.686 4498           0.000 0010            m^-1 T^-1
Bohr magneton in K/T                                   0.671 713 88          0.000 000 61          K T^-1
Bohr radius                                            0.529 177 210 92 e-10 0.000 000 000 17 e-10 m
Boltzmann constant                                     1.380 6488 e-23       0.000 0013 e-23       J K^-1
Boltzmann constant in eV/K                             8.617 3324 e-5        0.000 0078 e-5        eV K^-1
Boltzmann constant in Hz/K                             2.083 6618 e10        0.000 0019 e10        Hz K^-1
Boltzmann constant in inverse meters per kelvin        69.503 476            0.000 063             m^-1 K^-1
characteristic impedance of vacuum                     376.730 313 461...    (exact)               ohm
classical electron radius                              2.817 940 3267 e-15   0.000 000 0027 e-15   m
Compton wavelength                                     2.426 310 2389 e-12   0.000 000 0016 e-12   m
Compton wavelength over 2 pi                           386.159 268 00 e-15   0.000 000 25 e-15     m
conductance quantum                                    7.748 091 7346 e-5    0.000 000 0025 e-5    S
conventional value of Josephson constant               483 597.9 e9          (exact)               Hz V^-1
conventional value of von Klitzing constant            25 812.807            (exact)               ohm
Cu x unit                                              1.002 076 97 e-13     0.000 000 28 e-13     m
deuteron-electron mag. mom. ratio                      -4.664 345 537 e-4    0.000 000 039 e-4     
deuteron-electron mass ratio                           3670.482 9652         0.000 0015            
deuteron g factor                                      0.857 438 2308        0.000 000 0072        
deuteron mag. mom.                                     0.433 073 489 e-26    0.000 000 010 e-26    J T^-1
deuteron mag. mom. to Bohr magneton ratio              0.466 975 4556 e-3    0.000 000 0039 e-3    
deuteron mag. mom. to nuclear magneton ratio           0.857 438 2308        0.000 000 0072        
deuteron mass                                          3.343 583 48 e-27     0.000 000 15 e-27     kg
deuteron mass energy equivalent                        3.005 062 97 e-10     0.000 000 13 e-10     J
deuteron mass energy equivalent in MeV                 1875.612 859          0.000 041             MeV
deuteron mass in u                                     2.013 553 212 712     0.000 000 000 077     u
deuteron molar mass                                    2.013 553 212 712 e-3 0.000 000 000 077 e-3 kg mol^-1
deuteron-neutron mag. mom. ratio                       -0.448 206 52         0.000 000 11          
deuteron-proton mag. mom. ratio                        0.307 012 2070        0.000 000 0024        
deuteron-proton mass ratio                             1.999 007 500 97      0.000 000 000 18      
deuteron rms charge radius                             2.1424 e-15           0.0021 e-15           m
electric constant                                      8.854 187 817... e-12 (exact)               F m^-1
electron charge to mass quotient                       -1.758 820 088 e11    0.000 000 039 e11     C kg^-1
electron-deuteron mag. mom. ratio                      -2143.923 498         0.000 018             
electron-deuteron mass ratio                           2.724 437 1095 e-4    0.000 000 0011 e-4    
electron g factor                                      -2.002 319 304 361 53 0.000 000 000 000 53  
electron gyromag. ratio                                1.760 859 708 e11     0.000 000 039 e11     s^-1 T^-1
electron gyromag. ratio over 2 pi                      28 024.952 66         0.000 62              MHz T^-1
electron-helion mass ratio                             1.819 543 0761 e-4    0.000 000 0017 e-4    
electron mag. mom.                                     -928.476 430 e-26     0.000 021 e-26        J T^-1
electron mag. mom. anomaly                             1.159 652 180 76 e-3  0.000 000 000 27 e-3  
electron mag. mom. to Bohr magneton ratio              -1.001 159 652 180 76 0.000 000 000 000 27  
electron mag. mom. to nuclear magneton ratio           -1838.281 970 90      0.000 000 75          
electron mass                                          9.109 382 91 e-31     0.000 000 40 e-31     kg
electron mass energy equivalent                        8.187 105 06 e-14     0.000 000 36 e-14     J
electron mass energy equivalent in MeV                 0.510 998 928         0.000 000 011         MeV
electron mass in u                                     5.485 799 0946 e-4    0.000 000 0022 e-4    u
electron molar mass                                    5.485 799 0946 e-7    0.000 000 0022 e-7    kg mol^-1
electron-muon mag. mom. ratio                          206.766 9896          0.000 0052            
electron-muon mass ratio                               4.836 331 66 e-3      0.000 000 12 e-3      
electron-neutron mag. mom. ratio                       960.920 50            0.000 23              
electron-neutron mass ratio                            5.438 673 4461 e-4    0.000 000 0032 e-4    
electron-proton mag. mom. ratio                        -658.210 6848         0.000 0054            
electron-proton mass ratio                             5.446 170 2178 e-4    0.000 000 0022 e-4    
electron-tau mass ratio                                2.875 92 e-4          0.000 26 e-4          
electron to alpha particle mass ratio                  1.370 933 555 78 e-4  0.000 000 000 55 e-4  
electron to shielded helion mag. mom. ratio            864.058 257           0.000 010             
electron to shielded proton mag. mom. ratio            -658.227 5971         0.000 0072            
electron-triton mass ratio                             1.819 200 0653 e-4    0.000 000 0017 e-4    
electron volt                                          1.602 176 565 e-19    0.000 000 035 e-19    J
electron volt-atomic mass unit relationship            1.073 544 150 e-9     0.000 000 024 e-9     u
electron volt-hartree relationship                     3.674 932 379 e-2     0.000 000 081 e-2     E_h
electron volt-hertz relationship                       2.417 989 348 e14     0.000 000 053 e14     Hz
electron volt-inverse meter relationship               8.065 544 29 e5       0.000 000 18 e5       m^-1
electron volt-joule relationship                       1.602 176 565 e-19    0.000 000 035 e-19    J
electron volt-kelvin relationship                      1.160 4519 e4         0.000 0011 e4         K
electron volt-kilogram relationship                    1.782 661 845 e-36    0.000 000 039 e-36    kg
elementary charge                                      1.602 176 565 e-19    0.000 000 035 e-19    C
elementary charge over h                               2.417 989 348 e14     0.000 000 053 e14     A J^-1
Faraday constant                                       96 485.3365           0.0021                C mol^-1
Faraday constant for conventional electric current     96 485.3321           0.0043                C_90 mol^-1
Fermi coupling constant                                1.166 364 e-5         0.000 005 e-5         GeV^-2
fine-structure constant                                7.297 352 5698 e-3    0.000 000 0024 e-3    
first radiation constant                               3.741 771 53 e-16     0.000 000 17 e-16     W m^2
first radiation constant for spectral radiance         1.191 042 869 e-16    0.000 000 053 e-16    W m^2 sr^-1
hartree-atomic mass unit relationship                  2.921 262 3246 e-8    0.000 000 0021 e-8    u
hartree-electron volt relationship                     27.211 385 05         0.000 000 60          eV
Hartree energy                                         4.359 744 34 e-18     0.000 000 19 e-18     J
Hartree energy in eV                                   27.211 385 05         0.000 000 60          eV
hartree-hertz relationship                             6.579 683 920 729 e15 0.000 000 000 033 e15 Hz
hartree-inverse meter relationship                     2.194 746 313 708 e7  0.000 000 000 011 e7  m^-1
hartree-joule relationship                             4.359 744 34 e-18     0.000 000 19 e-18     J
hartree-kelvin relationship                            3.157 7504 e5         0.000 0029 e5         K
hartree-kilogram relationship                          4.850 869 79 e-35     0.000 000 21 e-35     kg
helion-electron mass ratio                             5495.885 2754         0.000 0050            
helion g factor                                        -4.255 250 613        0.000 000 050         
helion mag. mom.                                       -1.074 617 486 e-26   0.000 000 027 e-26    J T^-1
helion mag. mom. to Bohr magneton ratio                -1.158 740 958 e-3    0.000 000 014 e-3     
helion mag. mom. to nuclear magneton ratio             -2.127 625 306        0.000 000 025         
helion mass                                            5.006 412 34 e-27     0.000 000 22 e-27     kg
helion mass energy equivalent                          4.499 539 02 e-10     0.000 000 20 e-10     J
helion mass energy equivalent in MeV                   2808.391 482          0.000 062             MeV
helion mass in u                                       3.014 932 2468        0.000 000 0025        u
helion molar mass                                      3.014 932 2468 e-3    0.000 000 0025 e-3    kg mol^-1
helion-proton mass ratio                               2.993 152 6707        0.000 000 0025        
hertz-atomic mass unit relationship                    4.439 821 6689 e-24   0.000 000 0031 e-24   u
hertz-electron volt relationship                       4.135 667 516 e-15    0.000 000 091 e-15    eV
hertz-hartree relationship                             1.519 829 846 0045 e-16 0.000 000 000 0076 e-16 E_h
hertz-inverse meter relationship                       3.335 640 951... e-9  (exact)               m^-1
hertz-joule relationship                               6.626 069 57 e-34     0.000 000 29 e-34     J
hertz-kelvin relationship                              4.799 2434 e-11       0.000 0044 e-11       K
hertz-kilogram relationship                            7.372 496 68 e-51     0.000 000 33 e-51     kg
inverse fine-structure constant                        137.035 999 074       0.000 000 044         
inverse meter-atomic mass unit relationship            1.331 025 051 20 e-15 0.000 000 000 94 e-15 u
inverse meter-electron volt relationship               1.239 841 930 e-6     0.000 000 027 e-6     eV
inverse meter-hartree relationship                     4.556 335 252 755 e-8 0.000 000 000 023 e-8 E_h
inverse meter-hertz relationship                       299 792 458           (exact)               Hz
inverse meter-joule relationship                       1.986 445 684 e-25    0.000 000 088 e-25    J
inverse meter-kelvin relationship                      1.438 7770 e-2        0.000 0013 e-2        K
inverse meter-kilogram relationship                    2.210 218 902 e-42    0.000 000 098 e-42    kg
inverse of conductance quantum                         12 906.403 7217       0.000 0042            ohm
Josephson constant                                     483 597.870 e9        0.011 e9              Hz V^-1
joule-atomic mass unit relationship                    6.700 535 85 e9       0.000 000 30 e9       u
joule-electron volt relationship                       6.241 509 34 e18      0.000 000 14 e18      eV
joule-hartree relationship                             2.293 712 48 e17      0.000 000 10 e17      E_h
joule-hertz relationship                               1.509 190 311 e33     0.000 000 067 e33     Hz
joule-inverse meter relationship                       5.034 117 01 e24      0.000 000 22 e24      m^-1
joule-kelvin relationship                              7.242 9716 e22        0.000 0066 e22        K
joule-kilogram relationship                            1.112 650 056... e-17 (exact)               kg
kelvin-atomic mass unit relationship                   9.251 0868 e-14       0.000 0084 e-14       u
kelvin-electron volt relationship                      8.617 3324 e-5        0.000 0078 e-5        eV
kelvin-hartree relationship                            3.166 8114 e-6        0.000 0029 e-6        E_h
kelvin-hertz relationship                              2.083 6618 e10        0.000 0019 e10        Hz
kelvin-inverse meter relationship                      69.503 476            0.000 063             m^-1
kelvin-joule relationship                              1.380 6488 e-23       0.000 0013 e-23       J
kelvin-kilogram relationship                           1.536 1790 e-40       0.000 0014 e-40       kg
kilogram-atomic mass unit relationship                 6.022 141 29 e26      0.000 000 27 e26      u
kilogram-electron volt relationship                    5.609 588 85 e35      0.000 000 12 e35      eV
kilogram-hartree relationship                          2.061 485 968 e34     0.000 000 091 e34     E_h
kilogram-hertz relationship                            1.356 392 608 e50     0.000 000 060 e50     Hz
kilogram-inverse meter relationship                    4.524 438 73 e41      0.000 000 20 e41      m^-1
kilogram-joule relationship                            8.987 551 787... e16  (exact)               J
kilogram-kelvin relationship                           6.509 6582 e39        0.000 0059 e39        K
lattice parameter of silicon                           543.102 0504 e-12     0.000 0089 e-12       m
Loschmidt constant (273.15 K, 100 kPa)                 2.651 6462 e25        0.000 0024 e25        m^-3
Loschmidt constant (273.15 K, 101.325 kPa)             2.686 7805 e25        0.000 0024 e25        m^-3
mag. constant                                          12.566 370 614... e-7 (exact)               N A^-2
mag. flux quantum                                      2.067 833 758 e-15    0.000 000 046 e-15    Wb
molar gas constant                                     8.314 4621            0.000 0075            J mol^-1 K^-1
molar mass constant                                    1 e-3                 (exact)               kg mol^-1
molar mass of carbon-12                                12 e-3                (exact)               kg mol^-1
molar Planck constant                                  3.990 312 7176 e-10   0.000 000 0028 e-10   J s mol^-1
molar Planck constant times c                          0.119 626 565 779     0.000 000 000 084     J m mol^-1
molar volume of ideal gas (273.15 K, 100 kPa)          22.710 953 e-3        0.000 021 e-3         m^3 mol^-1
molar volume of ideal gas (273.15 K, 101.325 kPa)      22.413 968 e-3        0.000 020 e-3         m^3 mol^-1
molar volume of silicon                                12.058 833 01 e-6     0.000 000 80 e-6      m^3 mol^-1
Mo x unit                                              1.002 099 52 e-13     0.000 000 53 e-13     m
muon Compton wavelength                                11.734 441 03 e-15    0.000 000 30 e-15     m
muon Compton wavelength over 2 pi                      1.867 594 294 e-15    0.000 000 047 e-15    m
muon-electron mass ratio                               206.768 2843          0.000 0052            
muon g factor                                          -2.002 331 8418       0.000 000 0013        
muon mag. mom.                                         -4.490 448 07 e-26    0.000 000 15 e-26     J T^-1
muon mag. mom. anomaly                                 1.165 920 91 e-3      0.000 000 63 e-3      
muon mag. mom. to Bohr magneton ratio                  -4.841 970 44 e-3     0.000 000 12 e-3      
muon mag. mom. to nuclear magneton ratio               -8.890 596 97         0.000 000 22          
muon mass                                              1.883 531 475 e-28    0.000 000 096 e-28    kg
muon mass energy equivalent                            1.692 833 667 e-11    0.000 000 086 e-11    J
muon mass energy equivalent in MeV                     105.658 3715          0.000 0035            MeV
muon mass in u                                         0.113 428 9267        0.000 000 0029        u
muon molar mass                                        0.113 428 9267 e-3    0.000 000 0029 e-3    kg mol^-1
muon-neutron mass ratio                                0.112 454 5177        0.000 000 0028        
muon-proton mag. mom. ratio                            -3.183 345 107        0.000 000 084         
muon-proton mass ratio                                 0.112 609 5272        0.000 000 0028        
muon-tau mass ratio                                    5.946 49 e-2          0.000 54 e-2          
natural unit of action                                 1.054 571 726 e-34    0.000 000 047 e-34    J s
natural unit of action in eV s                         6.582 119 28 e-16     0.000 000 15 e-16     eV s
natural unit of energy                                 8.187 105 06 e-14     0.000 000 36 e-14     J
natural unit of energy in MeV                          0.510 998 928         0.000 000 011         MeV
natural unit of length                                 386.159 268 00 e-15   0.000 000 25 e-15     m
natural unit of mass                                   9.109 382 91 e-31     0.000 000 40 e-31     kg
natural unit of mom.um                                 2.730 924 29 e-22     0.000 000 12 e-22     kg m s^-1
natural unit of mom.um in MeV/c                        0.510 998 928         0.000 000 011         MeV/c
natural unit of time                                   1.288 088 668 33 e-21 0.000 000 000 83 e-21 s
natural unit of velocity                               299 792 458           (exact)               m s^-1
neutron Compton wavelength                             1.319 590 9068 e-15   0.000 000 0011 e-15   m
neutron Compton wavelength over 2 pi                   0.210 019 415 68 e-15 0.000 000 000 17 e-15 m
neutron-electron mag. mom. ratio                       1.040 668 82 e-3      0.000 000 25 e-3      
neutron-electron mass ratio                            1838.683 6605         0.000 0011            
neutron g factor                                       -3.826 085 45         0.000 000 90          
neutron gyromag. ratio                                 1.832 471 79 e8       0.000 000 43 e8       s^-1 T^-1
neutron gyromag. ratio over 2 pi                       29.164 6943           0.000 0069            MHz T^-1
neutron mag. mom.                                      -0.966 236 47 e-26    0.000 000 23 e-26     J T^-1
neutron mag. mom. to Bohr magneton ratio               -1.041 875 63 e-3     0.000 000 25 e-3      
neutron mag. mom. to nuclear magneton ratio            -1.913 042 72         0.000 000 45          
neutron mass                                           1.674 927 351 e-27    0.000 000 074 e-27    kg
neutron mass energy equivalent                         1.505 349 631 e-10    0.000 000 066 e-10    J
neutron mass energy equivalent in MeV                  939.565 379           0.000 021             MeV
neutron mass in u                                      1.008 664 916 00      0.000 000 000 43      u
neutron molar mass                                     1.008 664 916 00 e-3  0.000 000 000 43 e-3  kg mol^-1
neutron-muon mass ratio                                8.892 484 00          0.000 000 22          
neutron-proton mag. mom. ratio                         -0.684 979 34         0.000 000 16          
neutron-proton mass difference                         2.305 573 92 e-30     0.000 000 76 e-30     
neutron-proton mass difference energy equivalent       2.072 146 50 e-13     0.000 000 68 e-13     
neutron-proton mass difference energy equivalent in MeV 1.293 332 17          0.000 000 42          
neutron-proton mass difference in u                    0.001 388 449 19      0.000 000 000 45      
neutron-proton mass ratio                              1.001 378 419 17      0.000 000 000 45      
neutron-tau mass ratio                                 0.528 790             0.000 048             
neutron to shielded proton mag. mom. ratio             -0.684 996 94         0.000 000 16          
Newtonian constant of gravitation                      6.673 84 e-11         0.000 80 e-11         m^3 kg^-1 s^-2
Newtonian constant of gravitation over h-bar c         6.708 37 e-39         0.000 80 e-39         (GeV/c^2)^-2
nuclear magneton                                       5.050 783 53 e-27     0.000 000 11 e-27     J T^-1
nuclear magneton in eV/T                               3.152 451 2605 e-8    0.000 000 0022 e-8    eV T^-1
nuclear magneton in inverse meters per tesla           2.542 623 527 e-2     0.000 000 056 e-2     m^-1 T^-1
nuclear magneton in K/T                                3.658 2682 e-4        0.000 0033 e-4        K T^-1
nuclear magneton in MHz/T                              7.622 593 57          0.000 000 17          MHz T^-1
Planck constant                                        6.626 069 57 e-34     0.000 000 29 e-34     J s
Planck constant in eV s                                4.135 667 516 e-15    0.000 000 091 e-15    eV s
Planck constant over 2 pi                              1.054 571 726 e-34    0.000 000 047 e-34    J s
Planck constant over 2 pi in eV s                      6.582 119 28 e-16     0.000 000 15 e-16     eV s
Planck constant over 2 pi times c in MeV fm            197.326 9718          0.000 0044            MeV fm
Planck length                                          1.616 199 e-35        0.000 097 e-35        m
Planck mass                                            2.176 51 e-8          0.000 13 e-8          kg
Planck mass energy equivalent in GeV                   1.220 932 e19         0.000 073 e19         GeV
Planck temperature                                     1.416 833 e32         0.000 085 e32         K
Planck time                                            5.391 06 e-44         0.000 32 e-44         s
proton charge to mass quotient                         9.578 833 58 e7       0.000 000 21 e7       C kg^-1
proton Compton wavelength                              1.321 409 856 23 e-15 0.000 000 000 94 e-15 m
proton Compton wavelength over 2 pi                    0.210 308 910 47 e-15 0.000 000 000 15 e-15 m
proton-electron mass ratio                             1836.152 672 45       0.000 000 75          
proton g factor                                        5.585 694 713         0.000 000 046         
proton gyromag. ratio                                  2.675 222 005 e8      0.000 000 063 e8      s^-1 T^-1
proton gyromag. ratio over 2 pi                        42.577 4806           0.000 0010            MHz T^-1
proton mag. mom.                                       1.410 606 743 e-26    0.000 000 033 e-26    J T^-1
proton mag. mom. to Bohr magneton ratio                1.521 032 210 e-3     0.000 000 012 e-3     
proton mag. mom. to nuclear magneton ratio             2.792 847 356         0.000 000 023         
proton mag. shielding correction                       25.694 e-6            0.014 e-6             
proton mass                                            1.672 621 777 e-27    0.000 000 074 e-27    kg
proton mass energy equivalent                          1.503 277 484 e-10    0.000 000 066 e-10    J
proton mass energy equivalent in MeV                   938.272 046           0.000 021             MeV
proton mass in u                                       1.007 276 466 812     0.000 000 000 090     u
proton molar mass                                      1.007 276 466 812 e-3 0.000 000 000 090 e-3 kg mol^-1
proton-muon mass ratio                                 8.880 243 31          0.000 000 22          
proton-neutron mag. mom. ratio                         -1.459 898 06         0.000 000 34          
proton-neutron mass ratio                              0.998 623 478 26      0.000 000 000 45      
proton rms charge radius                               0.8775 e-15           0.0051 e-15           m
proton-tau mass ratio                                  0.528 063             0.000 048             
quantum of circulation                                 3.636 947 5520 e-4    0.000 000 0024 e-4    m^2 s^-1
quantum of circulation times 2                         7.273 895 1040 e-4    0.000 000 0047 e-4    m^2 s^-1
Rydberg constant                                       10 973 731.568 539    0.000 055             m^-1
Rydberg constant times c in Hz                         3.289 841 960 364 e15 0.000 000 000 017 e15 Hz
Rydberg constant times hc in eV                        13.605 692 53         0.000 000 30          eV
Rydberg constant times hc in J                         2.179 872 171 e-18    0.000 000 096 e-18    J
Sackur-Tetrode constant (1 K, 100 kPa)                 -1.151 7078           0.000 0023            
Sackur-Tetrode constant (1 K, 101.325 kPa)             -1.164 8708           0.000 0023            
second radiation constant                              1.438 7770 e-2        0.000 0013 e-2        m K
shielded helion gyromag. ratio                         2.037 894 659 e8      0.000 000 051 e8      s^-1 T^-1
shielded helion gyromag. ratio over 2 pi               32.434 100 84         0.000 000 81          MHz T^-1
shielded helion mag. mom.                              -1.074 553 044 e-26   0.000 000 027 e-26    J T^-1
shielded helion mag. mom. to Bohr magneton ratio       -1.158 671 471 e-3    0.000 000 014 e-3     
shielded helion mag. mom. to nuclear magneton ratio    -2.127 497 718        0.000 000 025         
shielded helion to proton mag. mom. ratio              -0.761 766 558        0.000 000 011         
shielded helion to shielded proton mag. mom. ratio     -0.761 786 1313       0.000 000 0033        
shielded proton gyromag. ratio                         2.675 153 268 e8      0.000 000 066 e8      s^-1 T^-1
shielded proton gyromag. ratio over 2 pi               42.576 3866           0.000 0010            MHz T^-1
shielded proton mag. mom.                              1.410 570 499 e-26    0.000 000 035 e-26    J T^-1
shielded proton mag. mom. to Bohr magneton ratio       1.520 993 128 e-3     0.000 000 017 e-3     
shielded proton mag. mom. to nuclear magneton ratio    2.792 775 598         0.000 000 030         
speed of light in vacuum                               299 792 458           (exact)               m s^-1
standard acceleration of gravity                       9.806 65              (exact)               m s^-2
standard atmosphere                                    101 325               (exact)               Pa
standard-state pressure                                100 000               (exact)               Pa
Stefan-Boltzmann constant                              5.670 373 e-8         0.000 021 e-8         W m^-2 K^-4
tau Compton wavelength                                 0.697 787 e-15        0.000 063 e-15        m
tau Compton wavelength over 2 pi                       0.111 056 e-15        0.000 010 e-15        m
tau-electron mass ratio                                3477.15               0.31                  
tau mass                                               3.167 47 e-27         0.000 29 e-27         kg
tau mass energy equivalent                             2.846 78 e-10         0.000 26 e-10         J
tau mass energy equivalent in MeV                      1776.82               0.16                  MeV
tau mass in u                                          1.907 49              0.000 17              u
tau molar mass                                         1.907 49 e-3          0.000 17 e-3          kg mol^-1
tau-muon mass ratio                                    16.8167               0.0015                
tau-neutron mass ratio                                 1.891 11              0.000 17              
tau-proton mass ratio                                  1.893 72              0.000 17              
Thomson cross section                                  0.665 245 8734 e-28   0.000 000 0013 e-28   m^2
triton-electron mass ratio                             5496.921 5267         0.000 0050            
triton g factor                                        5.957 924 896         0.000 000 076         
triton mag. mom.                                       1.504 609 447 e-26    0.000 000 038 e-26    J T^-1
triton mag. mom. to Bohr magneton ratio                1.622 393 657 e-3     0.000 000 021 e-3     
triton mag. mom. to nuclear magneton ratio             2.978 962 448         0.000 000 038         
triton mass                                            5.007 356 30 e-27     0.000 000 22 e-27     kg
triton mass energy equivalent                          4.500 387 41 e-10     0.000 000 20 e-10     J
triton mass energy equivalent in MeV                   2808.921 005          0.000 062             MeV
triton mass in u                                       3.015 500 7134        0.000 000 0025        u
triton molar mass                                      3.015 500 7134 e-3    0.000 000 0025 e-3    kg mol^-1
triton-proton mass ratio                               2.993 717 0308        0.000 000 0025        
unified atomic mass unit                               1.660 538 921 e-27    0.000 000 073 e-27    kg
von Klitzing constant                                  25 812.807 4434       0.000 0084            ohm
weak mixing angle                                      0.2223                0.0021                
Wien frequency displacement law constant               5.878 9254 e10        0.000 0053 e10        Hz K^-1
Wien wavelength displacement law constant              2.897 7721 e-3        0.000 0026 e-3        m K