Fundamental Physical Constants

Tables

Retrieved on 2016-11-06 22:28:55 from:

http://physics.nist.gov/cuu/Constants/Table/allascii.txt

Quantity Value Uncertainty Unit

{220} lattice spacing of silicon 192.0155714e-12 0.000 0032 e-12 m

alpha particle-electron mass ratio 7294.29954136 0.000 000 24

alpha particle mass 6.644657230e-27 0.000 000 082 e-27 kg

alpha particle mass energy equivalent 5.971920097e-10 0.000 000 073 e-10 J

alpha particle mass energy equivalent in MeV 3727.379378 0.000 023 MeV

alpha particle mass in u 4.001506179127 0.000 000 000 063 u

alpha particle molar mass 4.001506179127e-3 0.000 000 000 063 e-3 kg mol^-1

alpha particle-proton mass ratio 3.97259968907 0.000 000 000 36

Angstrom star 1.00001495e-10 0.000 000 90 e-10 m

atomic mass constant 1.660539040e-27 0.000 000 020 e-27 kg

atomic mass constant energy equivalent 1.492418062e-10 0.000 000 018 e-10 J

atomic mass constant energy equivalent in MeV 931.4940954 0.000 0057 MeV

atomic mass unit-electron volt relationship 931.4940954e6 0.000 0057 e6 eV

atomic mass unit-hartree relationship 3.4231776902e7 0.000 000 0016 e7 E_h

atomic mass unit-hertz relationship 2.2523427206e23 0.000 000 0010 e23 Hz

atomic mass unit-inverse meter relationship 7.5130066166e14 0.000 000 0034 e14 m^-1

atomic mass unit-joule relationship 1.492418062e-10 0.000 000 018 e-10 J

atomic mass unit-kelvin relationship 1.08095438e13 0.000 000 62 e13 K

atomic mass unit-kilogram relationship 1.660539040e-27 0.000 000 020 e-27 kg

atomic unit of 1st hyperpolarizability 3.206361329e-53 0.000 000 020 e-53 C^3 m^3 J^-2

atomic unit of 2nd hyperpolarizability 6.235380085e-65 0.000 000 077 e-65 C^4 m^4 J^-3

atomic unit of action 1.054571800e-34 0.000 000 013 e-34 J s

atomic unit of charge 1.6021766208e-19 0.000 000 0098 e-19 C

atomic unit of charge density 1.0812023770e12 0.000 000 0067 e12 C m^-3

atomic unit of current 6.623618183e-3 0.000 000 041 e-3 A

atomic unit of electric dipole mom. 8.478353552e-30 0.000 000 052 e-30 C m

atomic unit of electric field 5.142206707e11 0.000 000 032 e11 V m^-1

atomic unit of electric field gradient 9.717362356e21 0.000 000 060 e21 V m^-2

atomic unit of electric polarizability 1.6487772731e-41 0.000 000 0011 e-41 C^2 m^2 J^-1

atomic unit of electric potential 27.21138602 0.000 000 17 V

atomic unit of electric quadrupole mom. 4.486551484e-40 0.000 000 028 e-40 C m^2

atomic unit of energy 4.359744650e-18 0.000 000 054 e-18 J

atomic unit of force 8.23872336e-8 0.000 000 10 e-8 N

atomic unit of length 0.52917721067e-10 0.000 000 000 12 e-10 m

atomic unit of mag. dipole mom. 1.854801999e-23 0.000 000 011 e-23 J T^-1

atomic unit of mag. flux density 2.350517550e5 0.000 000 014 e5 T

atomic unit of magnetizability 7.8910365886e-29 0.000 000 0090 e-29 J T^-2

atomic unit of mass 9.10938356e-31 0.000 000 11 e-31 kg

atomic unit of mom.um 1.992851882e-24 0.000 000 024 e-24 kg m s^-1

atomic unit of permittivity 1.112650056...e-10 (exact) F m^-1

atomic unit of time 2.418884326509e-17 0.000 000 000 014 e-17 s

atomic unit of velocity 2.18769126277e6 0.000 000 000 50 e6 m s^-1

Avogadro constant 6.022140857e23 0.000 000 074 e23 mol^-1

Bohr magneton 927.4009994e-26 0.000 0057 e-26 J T^-1

Bohr magneton in eV/T 5.7883818012e-5 0.000 000 0026 e-5 eV T^-1

Bohr magneton in Hz/T 13.996245042e9 0.000 000 086 e9 Hz T^-1

Bohr magneton in inverse meters per tesla 46.68644814 0.000 000 29 m^-1 T^-1

Bohr magneton in K/T 0.67171405 0.000 000 39 K T^-1

Bohr radius 0.52917721067e-10 0.000 000 000 12 e-10 m

Boltzmann constant 1.38064852e-23 0.000 000 79 e-23 J K^-1

Boltzmann constant in eV/K 8.6173303e-5 0.000 0050 e-5 eV K^-1

Boltzmann constant in Hz/K 2.0836612e10 0.000 0012 e10 Hz K^-1

Boltzmann constant in inverse meters per kelvin 69.503457 0.000 040 m^-1 K^-1

characteristic impedance of vacuum 376.730313461... (exact) ohm

classical electron radius 2.8179403227e-15 0.000 000 0019 e-15 m

Compton wavelength 2.4263102367e-12 0.000 000 0011 e-12 m

Compton wavelength over 2 pi 386.15926764e-15 0.000 000 18 e-15 m

conductance quantum 7.7480917310e-5 0.000 000 0018 e-5 S

conventional value of Josephson constant 483597.9e9 (exact) Hz V^-1

conventional value of von Klitzing constant 25812.807 (exact) ohm

Cu x unit 1.00207697e-13 0.000 000 28 e-13 m

deuteron-electron mag. mom. ratio -4.664345535e-4 0.000 000 026 e-4

deuteron-electron mass ratio 3670.48296785 0.000 000 13

deuteron g factor 0.8574382311 0.000 000 0048

deuteron mag. mom. 0.4330735040e-26 0.000 000 0036 e-26 J T^-1

deuteron mag. mom. to Bohr magneton ratio 0.4669754554e-3 0.000 000 0026 e-3

deuteron mag. mom. to nuclear magneton ratio 0.8574382311 0.000 000 0048

deuteron mass 3.343583719e-27 0.000 000 041 e-27 kg

deuteron mass energy equivalent 3.005063183e-10 0.000 000 037 e-10 J

deuteron mass energy equivalent in MeV 1875.612928 0.000 012 MeV

deuteron mass in u 2.013553212745 0.000 000 000 040 u

deuteron molar mass 2.013553212745e-3 0.000 000 000 040 e-3 kg mol^-1

deuteron-neutron mag. mom. ratio -0.44820652 0.000 000 11

deuteron-proton mag. mom. ratio 0.3070122077 0.000 000 0015

deuteron-proton mass ratio 1.99900750087 0.000 000 000 19

deuteron rms charge radius 2.1413e-15 0.0025 e-15 m

electric constant 8.854187817...e-12 (exact) F m^-1

electron charge to mass quotient -1.758820024e11 0.000 000 011 e11 C kg^-1

electron-deuteron mag. mom. ratio -2143.923499 0.000 012

electron-deuteron mass ratio 2.724437107484e-4 0.000 000 000 096 e-4

electron g factor -2.00231930436182 0.000 000 000 000 52

electron gyromag. ratio 1.760859644e11 0.000 000 011 e11 s^-1 T^-1

electron gyromag. ratio over 2 pi 28024.95164 0.000 17 MHz T^-1

electron-helion mass ratio 1.819543074854e-4 0.000 000 000 088 e-4

electron mag. mom. -928.4764620e-26 0.000 0057 e-26 J T^-1

electron mag. mom. anomaly 1.15965218091e-3 0.000 000 000 26 e-3

electron mag. mom. to Bohr magneton ratio -1.00115965218091 0.000 000 000 000 26

electron mag. mom. to nuclear magneton ratio -1838.28197234 0.000 000 17

electron mass 9.10938356e-31 0.000 000 11 e-31 kg

electron mass energy equivalent 8.18710565e-14 0.000 000 10 e-14 J

electron mass energy equivalent in MeV 0.5109989461 0.000 000 0031 MeV

electron mass in u 5.48579909070e-4 0.000 000 000 16 e-4 u

electron molar mass 5.48579909070e-7 0.000 000 000 16 e-7 kg mol^-1

electron-muon mag. mom. ratio 206.7669880 0.000 0046

electron-muon mass ratio 4.83633170e-3 0.000 000 11 e-3

electron-neutron mag. mom. ratio 960.92050 0.000 23

electron-neutron mass ratio 5.4386734428e-4 0.000 000 0027 e-4

electron-proton mag. mom. ratio -658.2106866 0.000 0020

electron-proton mass ratio 5.44617021352e-4 0.000 000 000 52 e-4

electron-tau mass ratio 2.87592e-4 0.000 26 e-4

electron to alpha particle mass ratio 1.370933554798e-4 0.000 000 000 045 e-4

electron to shielded helion mag. mom. ratio 864.058257 0.000 010

electron to shielded proton mag. mom. ratio -658.2275971 0.000 0072

electron-triton mass ratio 1.819200062203e-4 0.000 000 000 084 e-4

electron volt 1.6021766208e-19 0.000 000 0098 e-19 J

electron volt-atomic mass unit relationship 1.0735441105e-9 0.000 000 0066 e-9 u

electron volt-hartree relationship 3.674932248e-2 0.000 000 023 e-2 E_h

electron volt-hertz relationship 2.417989262e14 0.000 000 015 e14 Hz

electron volt-inverse meter relationship 8.065544005e5 0.000 000 050 e5 m^-1

electron volt-joule relationship 1.6021766208e-19 0.000 000 0098 e-19 J

electron volt-kelvin relationship 1.16045221e4 0.000 000 67 e4 K

electron volt-kilogram relationship 1.782661907e-36 0.000 000 011 e-36 kg

elementary charge 1.6021766208e-19 0.000 000 0098 e-19 C

elementary charge over h 2.417989262e14 0.000 000 015 e14 A J^-1

Faraday constant 96485.33289 0.000 59 C mol^-1

Faraday constant for conventional electric current 96485.3251 0.0012 C_90 mol^-1

Fermi coupling constant 1.1663787e-5 0.000 0006 e-5 GeV^-2

fine-structure constant 7.2973525664e-3 0.000 000 0017 e-3

first radiation constant 3.741771790e-16 0.000 000 046 e-16 W m^2

first radiation constant for spectral radiance 1.191042953e-16 0.000 000 015 e-16 W m^2 sr^-1

hartree-atomic mass unit relationship 2.9212623197e-8 0.000 000 0013 e-8 u

hartree-electron volt relationship 27.21138602 0.000 000 17 eV

Hartree energy 4.359744650e-18 0.000 000 054 e-18 J

Hartree energy in eV 27.21138602 0.000 000 17 eV

hartree-hertz relationship 6.579683920711e15 0.000 000 000 039 e15 Hz

hartree-inverse meter relationship 2.194746313702e7 0.000 000 000 013 e7 m^-1

hartree-joule relationship 4.359744650e-18 0.000 000 054 e-18 J

hartree-kelvin relationship 3.1577513e5 0.000 0018 e5 K

hartree-kilogram relationship 4.850870129e-35 0.000 000 060 e-35 kg

helion-electron mass ratio 5495.88527922 0.000 000 27

helion g factor -4.255250616 0.000 000 050

helion mag. mom. -1.074617522e-26 0.000 000 014 e-26 J T^-1

helion mag. mom. to Bohr magneton ratio -1.158740958e-3 0.000 000 014 e-3

helion mag. mom. to nuclear magneton ratio -2.127625308 0.000 000 025

helion mass 5.006412700e-27 0.000 000 062 e-27 kg

helion mass energy equivalent 4.499539341e-10 0.000 000 055 e-10 J

helion mass energy equivalent in MeV 2808.391586 0.000 017 MeV

helion mass in u 3.01493224673 0.000 000 000 12 u

helion molar mass 3.01493224673e-3 0.000 000 000 12 e-3 kg mol^-1

helion-proton mass ratio 2.99315267046 0.000 000 000 29

hertz-atomic mass unit relationship 4.4398216616e-24 0.000 000 0020 e-24 u

hertz-electron volt relationship 4.135667662e-15 0.000 000 025 e-15 eV

hertz-hartree relationship 1.5198298460088e-16 0.000 000 000 0090 e-16 E_h

hertz-inverse meter relationship 3.335640951...e-9 (exact) m^-1

hertz-joule relationship 6.626070040e-34 0.000 000 081 e-34 J

hertz-kelvin relationship 4.7992447e-11 0.000 0028 e-11 K

hertz-kilogram relationship 7.372497201e-51 0.000 000 091 e-51 kg

inverse fine-structure constant 137.035999139 0.000 000 031

inverse meter-atomic mass unit relationship 1.33102504900e-15 0.000 000 000 61 e-15 u

inverse meter-electron volt relationship 1.2398419739e-6 0.000 000 0076 e-6 eV

inverse meter-hartree relationship 4.556335252767e-8 0.000 000 000 027 e-8 E_h

inverse meter-hertz relationship 299792458 (exact) Hz

inverse meter-joule relationship 1.986445824e-25 0.000 000 024 e-25 J

inverse meter-kelvin relationship 1.43877736e-2 0.000 000 83 e-2 K

inverse meter-kilogram relationship 2.210219057e-42 0.000 000 027 e-42 kg

inverse of conductance quantum 12906.4037278 0.000 0029 ohm

Josephson constant 483597.8525e9 0.0030 e9 Hz V^-1

joule-atomic mass unit relationship 6.700535363e9 0.000 000 082 e9 u

joule-electron volt relationship 6.241509126e18 0.000 000 038 e18 eV

joule-hartree relationship 2.293712317e17 0.000 000 028 e17 E_h

joule-hertz relationship 1.509190205e33 0.000 000 019 e33 Hz

joule-inverse meter relationship 5.034116651e24 0.000 000 062 e24 m^-1

joule-kelvin relationship 7.2429731e22 0.000 0042 e22 K

joule-kilogram relationship 1.112650056...e-17 (exact) kg

kelvin-atomic mass unit relationship 9.2510842e-14 0.000 0053 e-14 u

kelvin-electron volt relationship 8.6173303e-5 0.000 0050 e-5 eV

kelvin-hartree relationship 3.1668105e-6 0.000 0018 e-6 E_h

kelvin-hertz relationship 2.0836612e10 0.000 0012 e10 Hz

kelvin-inverse meter relationship 69.503457 0.000 040 m^-1

kelvin-joule relationship 1.38064852e-23 0.000 000 79 e-23 J

kelvin-kilogram relationship 1.53617865e-40 0.000 000 88 e-40 kg

kilogram-atomic mass unit relationship 6.022140857e26 0.000 000 074 e26 u

kilogram-electron volt relationship 5.609588650e35 0.000 000 034 e35 eV

kilogram-hartree relationship 2.061485823e34 0.000 000 025 e34 E_h

kilogram-hertz relationship 1.356392512e50 0.000 000 017 e50 Hz

kilogram-inverse meter relationship 4.524438411e41 0.000 000 056 e41 m^-1

kilogram-joule relationship 8.987551787...e16 (exact) J

kilogram-kelvin relationship 6.5096595e39 0.000 0037 e39 K

lattice parameter of silicon 543.1020504e-12 0.000 0089 e-12 m

Loschmidt constant (273.15 K, 100 kPa) 2.6516467e25 0.000 0015 e25 m^-3

Loschmidt constant (273.15 K, 101.325 kPa) 2.6867811e25 0.000 0015 e25 m^-3

mag. constant 12.566370614...e-7 (exact) N A^-2

mag. flux quantum 2.067833831e-15 0.000 000 013 e-15 Wb

molar gas constant 8.3144598 0.000 0048 J mol^-1 K^-1

molar mass constant 1e-3 (exact) kg mol^-1

molar mass of carbon-12 12e-3 (exact) kg mol^-1

molar Planck constant 3.9903127110e-10 0.000 000 0018 e-10 J s mol^-1

molar Planck constant times c 0.119626565582 0.000 000 000 054 J m mol^-1

molar volume of ideal gas (273.15 K, 100 kPa) 22.710947e-3 0.000 013 e-3 m^3 mol^-1

molar volume of ideal gas (273.15 K, 101.325 kPa) 22.413962e-3 0.000 013 e-3 m^3 mol^-1

molar volume of silicon 12.05883214e-6 0.000 000 61 e-6 m^3 mol^-1

Mo x unit 1.00209952e-13 0.000 000 53 e-13 m

muon Compton wavelength 11.73444111e-15 0.000 000 26 e-15 m

muon Compton wavelength over 2 pi 1.867594308e-15 0.000 000 042 e-15 m

muon-electron mass ratio 206.7682826 0.000 0046

muon g factor -2.0023318418 0.000 000 0013

muon mag. mom. -4.49044826e-26 0.000 000 10 e-26 J T^-1

muon mag. mom. anomaly 1.16592089e-3 0.000 000 63 e-3

muon mag. mom. to Bohr magneton ratio -4.84197048e-3 0.000 000 11 e-3

muon mag. mom. to nuclear magneton ratio -8.89059705 0.000 000 20

muon mass 1.883531594e-28 0.000 000 048 e-28 kg

muon mass energy equivalent 1.692833774e-11 0.000 000 043 e-11 J

muon mass energy equivalent in MeV 105.6583745 0.000 0024 MeV

muon mass in u 0.1134289257 0.000 000 0025 u

muon molar mass 0.1134289257e-3 0.000 000 0025 e-3 kg mol^-1

muon-neutron mass ratio 0.1124545167 0.000 000 0025

muon-proton mag. mom. ratio -3.183345142 0.000 000 071

muon-proton mass ratio 0.1126095262 0.000 000 0025

muon-tau mass ratio 5.94649e-2 0.000 54 e-2

natural unit of action 1.054571800e-34 0.000 000 013 e-34 J s

natural unit of action in eV s 6.582119514e-16 0.000 000 040 e-16 eV s

natural unit of energy 8.18710565e-14 0.000 000 10 e-14 J

natural unit of energy in MeV 0.5109989461 0.000 000 0031 MeV

natural unit of length 386.15926764e-15 0.000 000 18 e-15 m

natural unit of mass 9.10938356e-31 0.000 000 11 e-31 kg

natural unit of mom.um 2.730924488e-22 0.000 000 034 e-22 kg m s^-1

natural unit of mom.um in MeV/c 0.5109989461 0.000 000 0031 MeV/c

natural unit of time 1.28808866712e-21 0.000 000 000 58 e-21 s

natural unit of velocity 299792458 (exact) m s^-1

neutron Compton wavelength 1.31959090481e-15 0.000 000 000 88 e-15 m

neutron Compton wavelength over 2 pi 0.21001941536e-15 0.000 000 000 14 e-15 m

neutron-electron mag. mom. ratio 1.04066882e-3 0.000 000 25 e-3

neutron-electron mass ratio 1838.68366158 0.000 000 90

neutron g factor -3.82608545 0.000 000 90

neutron gyromag. ratio 1.83247172e8 0.000 000 43 e8 s^-1 T^-1

neutron gyromag. ratio over 2 pi 29.1646933 0.000 0069 MHz T^-1

neutron mag. mom. -0.96623650e-26 0.000 000 23 e-26 J T^-1

neutron mag. mom. to Bohr magneton ratio -1.04187563e-3 0.000 000 25 e-3

neutron mag. mom. to nuclear magneton ratio -1.91304273 0.000 000 45

neutron mass 1.674927471e-27 0.000 000 021 e-27 kg

neutron mass energy equivalent 1.505349739e-10 0.000 000 019 e-10 J

neutron mass energy equivalent in MeV 939.5654133 0.000 0058 MeV

neutron mass in u 1.00866491588 0.000 000 000 49 u

neutron molar mass 1.00866491588e-3 0.000 000 000 49 e-3 kg mol^-1

neutron-muon mass ratio 8.89248408 0.000 000 20

neutron-proton mag. mom. ratio -0.68497934 0.000 000 16

neutron-proton mass difference 2.30557377e-30 0.000 000 85 e-30

neutron-proton mass difference energy equivalent 2.07214637e-13 0.000 000 76 e-13

neutron-proton mass difference energy equivalent in MeV 1.29333205 0.000 000 48

neutron-proton mass difference in u 0.00138844900 0.000 000 000 51

neutron-proton mass ratio 1.00137841898 0.000 000 000 51

neutron-tau mass ratio 0.528790 0.000 048

neutron to shielded proton mag. mom. ratio -0.68499694 0.000 000 16

Newtonian constant of gravitation 6.67408e-11 0.000 31 e-11 m^3 kg^-1 s^-2

Newtonian constant of gravitation over h-bar c 6.70861e-39 0.000 31 e-39 (GeV/c^2)^-2

nuclear magneton 5.050783699e-27 0.000 000 031 e-27 J T^-1

nuclear magneton in eV/T 3.1524512550e-8 0.000 000 0015 e-8 eV T^-1

nuclear magneton in inverse meters per tesla 2.542623432e-2 0.000 000 016 e-2 m^-1 T^-1

nuclear magneton in K/T 3.6582690e-4 0.000 0021 e-4 K T^-1

nuclear magneton in MHz/T 7.622593285 0.000 000 047 MHz T^-1

Planck constant 6.626070040e-34 0.000 000 081 e-34 J s

Planck constant in eV s 4.135667662e-15 0.000 000 025 e-15 eV s

Planck constant over 2 pi 1.054571800e-34 0.000 000 013 e-34 J s

Planck constant over 2 pi in eV s 6.582119514e-16 0.000 000 040 e-16 eV s

Planck constant over 2 pi times c in MeV fm 197.3269788 0.000 0012 MeV fm

Planck length 1.616229e-35 0.000 038 e-35 m

Planck mass 2.176470e-8 0.000 051 e-8 kg

Planck mass energy equivalent in GeV 1.220910e19 0.000 029 e19 GeV

Planck temperature 1.416808e32 0.000 033 e32 K

Planck time 5.39116e-44 0.000 13 e-44 s

proton charge to mass quotient 9.578833226e7 0.000 000 059 e7 C kg^-1

proton Compton wavelength 1.32140985396e-15 0.000 000 000 61 e-15 m

proton Compton wavelength over 2 pi 0.210308910109e-15 0.000 000 000 097 e-15 m

proton-electron mass ratio 1836.15267389 0.000 000 17

proton g factor 5.585694702 0.000 000 017

proton gyromag. ratio 2.675221900e8 0.000 000 018 e8 s^-1 T^-1

proton gyromag. ratio over 2 pi 42.57747892 0.000 000 29 MHz T^-1

proton mag. mom. 1.4106067873e-26 0.000 000 0097 e-26 J T^-1

proton mag. mom. to Bohr magneton ratio 1.5210322053e-3 0.000 000 0046 e-3

proton mag. mom. to nuclear magneton ratio 2.7928473508 0.000 000 0085

proton mag. shielding correction 25.691e-6 0.011 e-6

proton mass 1.672621898e-27 0.000 000 021 e-27 kg

proton mass energy equivalent 1.503277593e-10 0.000 000 018 e-10 J

proton mass energy equivalent in MeV 938.2720813 0.000 0058 MeV

proton mass in u 1.007276466879 0.000 000 000 091 u

proton molar mass 1.007276466879e-3 0.000 000 000 091 e-3 kg mol^-1

proton-muon mass ratio 8.88024338 0.000 000 20

proton-neutron mag. mom. ratio -1.45989805 0.000 000 34

proton-neutron mass ratio 0.99862347844 0.000 000 000 51

proton rms charge radius 0.8751e-15 0.0061 e-15 m

proton-tau mass ratio 0.528063 0.000 048

quantum of circulation 3.6369475486e-4 0.000 000 0017 e-4 m^2 s^-1

quantum of circulation times 2 7.2738950972e-4 0.000 000 0033 e-4 m^2 s^-1

Rydberg constant 10973731.568508 0.000 065 m^-1

Rydberg constant times c in Hz 3.289841960355e15 0.000 000 000 019 e15 Hz

Rydberg constant times hc in eV 13.605693009 0.000 000 084 eV

Rydberg constant times hc in J 2.179872325e-18 0.000 000 027 e-18 J

Sackur-Tetrode constant (1 K, 100 kPa) -1.1517084 0.000 0014

Sackur-Tetrode constant (1 K, 101.325 kPa) -1.1648714 0.000 0014

second radiation constant 1.43877736e-2 0.000 000 83 e-2 m K

shielded helion gyromag. ratio 2.037894585e8 0.000 000 027 e8 s^-1 T^-1

shielded helion gyromag. ratio over 2 pi 32.43409966 0.000 000 43 MHz T^-1

shielded helion mag. mom. -1.074553080e-26 0.000 000 014 e-26 J T^-1

shielded helion mag. mom. to Bohr magneton ratio -1.158671471e-3 0.000 000 014 e-3

shielded helion mag. mom. to nuclear magneton ratio -2.127497720 0.000 000 025

shielded helion to proton mag. mom. ratio -0.7617665603 0.000 000 0092

shielded helion to shielded proton mag. mom. ratio -0.7617861313 0.000 000 0033

shielded proton gyromag. ratio 2.675153171e8 0.000 000 033 e8 s^-1 T^-1

shielded proton gyromag. ratio over 2 pi 42.57638507 0.000 000 53 MHz T^-1

shielded proton mag. mom. 1.410570547e-26 0.000 000 018 e-26 J T^-1

shielded proton mag. mom. to Bohr magneton ratio 1.520993128e-3 0.000 000 017 e-3

shielded proton mag. mom. to nuclear magneton ratio 2.792775600 0.000 000 030

speed of light in vacuum 299792458 (exact) m s^-1

standard acceleration of gravity 9.80665 (exact) m s^-2

standard atmosphere 101325 (exact) Pa

standard-state pressure 100000 (exact) Pa

Stefan-Boltzmann constant 5.670367e-8 0.000 013 e-8 W m^-2 K^-4

tau Compton wavelength 0.697787e-15 0.000 063 e-15 m

tau Compton wavelength over 2 pi 0.111056e-15 0.000 010 e-15 m

tau-electron mass ratio 3477.15 0.31

tau mass 3.16747e-27 0.000 29 e-27 kg

tau mass energy equivalent 2.84678e-10 0.000 26 e-10 J

tau mass energy equivalent in MeV 1776.82 0.16 MeV

tau mass in u 1.90749 0.000 17 u

tau molar mass 1.90749e-3 0.000 17 e-3 kg mol^-1

tau-muon mass ratio 16.8167 0.0015

tau-neutron mass ratio 1.89111 0.000 17

tau-proton mass ratio 1.89372 0.000 17

Thomson cross section 0.66524587158e-28 0.000 000 000 91 e-28 m^2

triton-electron mass ratio 5496.92153588 0.000 000 26

triton g factor 5.957924920 0.000 000 028

triton mag. mom. 1.504609503e-26 0.000 000 012 e-26 J T^-1

triton mag. mom. to Bohr magneton ratio 1.6223936616e-3 0.000 000 0076 e-3

triton mag. mom. to nuclear magneton ratio 2.978962460 0.000 000 014

triton mass 5.007356665e-27 0.000 000 062 e-27 kg

triton mass energy equivalent 4.500387735e-10 0.000 000 055 e-10 J

triton mass energy equivalent in MeV 2808.921112 0.000 017 MeV

triton mass in u 3.01550071632 0.000 000 000 11 u

triton molar mass 3.01550071632e-3 0.000 000 000 11 e-3 kg mol^-1

triton-proton mass ratio 2.99371703348 0.000 000 000 22

unified atomic mass unit 1.660539040e-27 0.000 000 020 e-27 kg

von Klitzing constant 25812.8074555 0.000 0059 ohm

weak mixing angle 0.2223 0.0021

Wien frequency displacement law constant 5.8789238e10 0.000 0034 e10 Hz K^-1

Wien wavelength displacement law constant 2.8977729e-3 0.000 0017 e-3 m K

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