$Date: 2010-02-05 08:13:41 -0500 (Fri, 05 Feb 2010) $ NIST Constants James E. Masters $Revision: 83 $ http://physics.nist.gov/cuu/index.html NIST NIST Constants Ontology The QUDT Ontologies and data sets are issued under a Creative Commons Attribution Share Alike 3.0 United States License. Attribution of the physical constant data (terms in the nist: name space and their property values) should be made to the NIST Physics Lab; attribution of the QUDT schemas should be made to NASA AMES Research Center and TopQuadrant, Inc. Ralph Hodgson Irene Polikoff Quantities, Units, and Dimensions This graph defines terms for and contains the values and standard uncertainties of 324 physical constants taken from the NIST website: The NIST Reference on Constants, Units, and Uncertainty, at http://physics.nist.gov/cuu/index.html $Id: nist-constants.n3 83 2010-02-05 13:13:41Z dmekonnen $ 1 Physical Constant CODATA Value The values for the NIST physical constants are maintained by the Committee on Data for Science and Technology. exact constant 0.000000031e-6 1.239841875e-6 CODATA value for inverse meter-electron volt relationship inverse meter-electron volt relationship 0.00000023e-26 -0.96623641e-26 CODATA value for neutron magnetic moment neutron magnetic moment 0.0028e-15 2.1402e-15 CODATA value for deuteron rms charge radius deuteron rms charge radius 0.000000099e-25 1.986445501e-25 CODATA value for inverse meter-joule relationship inverse meter-joule relationship 0.000000000078e-3 2.013553212724e-3 CODATA value for deuteron molar mass deuteron molar mass 0.000000070e8 2.675222099e8 CODATA value for proton gyromagnetic ratio proton gyromagnetic ratio 0.00000033e9 6.70053641e9 CODATA value for joule-atomic mass unit relationship joule-atomic mass unit relationship 0.00000024e21 9.71736166e21 CODATA value for atomic unit of electric field gradient atomic unit of electric field gradient 0.00000011e-40 4.48655107e-40 CODATA value for atomic unit of electric quadrupole moment atomic unit of electric quadrupole moment 0.000000025 -2.127497718 CODATA value for shielded helion magnetic moment to nuclear magneton ratio shielded helion magnetic moment to nuclear magneton ratio 0.00000010e-15 4.13566733e-15 CODATA value for hertz-electron volt relationship hertz-electron volt relationship 0.00031 1.89390 CODATA value for tau-proton mass ratio tau-proton mass ratio 0.00031 1.89129 CODATA value for tau-neutron mass ratio tau-neutron mass ratio 0.000000044e-36 1.782661758e-36 CODATA value for electron volt-kilogram relationship electron volt-kilogram relationship 0.000000011 -0.761766558 CODATA value for shielded helion to proton magnetic moment ratio shielded helion to proton magnetic moment ratio 0.29 1776.99 CODATA value for tau mass energy equivalent in MeV tau mass energy equivalent in MeV 0.000000030 2.792775598 CODATA value for shielded proton magnetic moment to nuclear magneton ratio shielded proton magnetic moment to nuclear magneton ratio 0.000000068e50 1.356392733e50 CODATA value for kilogram-hertz relationship kilogram-hertz relationship 0.000023e-26 927.400915e-26 CODATA value for Bohr magneton Bohr magneton 0.000000044e11 -1.758820150e11 CODATA value for electron charge to mass quotient electron charge to mass quotient 0.00000030e-15 11.73444104e-15 CODATA value for muon Compton wavelength muon Compton wavelength 0.00000045e-31 9.10938215e-31 CODATA value for atomic unit of mass atomic unit of mass 0.00000022e-18 4.35974394e-18 CODATA value for hartree-joule relationship hartree-joule relationship 0.000000038 2.978962448 CODATA value for triton magnetic moment to nuclear magneton ratio triton magnetic moment to nuclear magneton ratio 0.00000000058e-4 1.37093355570e-4 CODATA value for electron to alpha particle mass ratio electron to alpha particle mass ratio 0.00056 0.22255 CODATA value for weak mixing angle weak mixing angle 0.00000019e-16 3.74177118e-16 CODATA value for first radiation constant first radiation constant 0.00000068 27.21138386 CODATA value for Hartree energy in eV Hartree energy in eV 0.00000024e-35 4.85086934e-35 CODATA value for hartree-kilogram relationship hartree-kilogram relationship 0.000086 0.528012 CODATA value for proton-tau mass ratio proton-tau mass ratio 0.0000044 -1.1648677 CODATA value for Sackur-Tetrode constant 1 K 101.325 kPa Sackur-Tetrode constant 1 K 101.325 kPa 0.00000000036e-10 0.52917720859e-10 CODATA value for atomic unit of length atomic unit of length 0.000000000022e15 3.289841960361e15 CODATA value for Rydberg constant times c in Hz Rydberg constant times c in Hz 0.00031e-3 1.90768e-3 CODATA value for tau molar mass tau molar mass 0.000000052e-15 2.067833667e-15 CODATA value for magnetic flux quantum magnetic flux quantum 0.0000000049e7 3.4231777149e7 CODATA value for atomic mass unit-hartree relationship atomic mass unit-hartree relationship 0.00000041e-8 8.23872206e-8 CODATA value for atomic unit of force atomic unit of force 0.00000037 -1.55718553 CODATA value for triton-neutron magnetic moment ratio triton-neutron magnetic moment ratio 0.000023e-26 -928.476377e-26 CODATA value for electron magnetic moment electron magnetic moment 0.0000000026e-3 3.0149322473e-3 CODATA value for helion molar mass helion molar mass 0.0000000029 0.1124545167 CODATA value for muon-neutron mass ratio muon-neutron mass ratio 0.00000080 -1838.28197092 CODATA value for electron magnetic moment to nuclear magneton ratio electron magnetic moment to nuclear magneton ratio 0.00000053e-15 386.15926459e-15 CODATA value for natural unit of length natural unit of length 0.00000000036e-10 0.52917720859e-10 CODATA value for Bohr radius Bohr radius 0.000000011e-26 0.433073465e-26 CODATA value for deuteron magnetic moment deuteron magnetic moment 0.57 3477.48 CODATA value for tau-electron mass ratio tau-electron mass ratio 0.000000083e-27 1.660538782e-27 CODATA value for atomic mass unit-kilogram relationship atomic mass unit-kilogram relationship 0.0000000024 0.3070122070 CODATA value for deuteron-proton magnetic moment ratio deuteron-proton magnetic moment ratio 0.000000000030e-8 4.556335252760e-8 CODATA value for inverse meter-hartree relationship inverse meter-hartree relationship 0.0000000058e-15 2.8179402894e-15 CODATA value for classical electron radius classical electron radius 0.000000027e12 1.081202300e12 CODATA value for atomic unit of charge density atomic unit of charge density 0.0000024e-23 1.3806504e-23 CODATA value for Boltzmann constant Boltzmann constant 0.00000025e-27 5.00641192e-27 CODATA value for helion mass helion mass true 3.335640951...e-9 CODATA value for hertz-inverse meter relationship hertz-inverse meter relationship 0.0000000018e-21 1.2880886570e-21 CODATA value for natural unit of time natural unit of time 0.00000023 -8.89059705 CODATA value for muon magnetic moment to nuclear magneton ratio muon magnetic moment to nuclear magneton ratio 0.000000000078 2.013553212724 CODATA value for deuteron mass in atomic mass unit deuteron mass in atomic mass unit 0.00000011e-18 2.17987197e-18 CODATA value for Rydberg constant times hc in J Rydberg constant times hc in J 0.000023 938.272013 CODATA value for proton mass energy equivalent in MeV proton mass energy equivalent in MeV 0.000000094 137.035999679 CODATA value for inverse fine-structure constant inverse fine-structure constant true 483597.9e9 CODATA value for conventional value of Josephson constant conventional value of Josephson constant 0.000000000015e7 2.194746313705e7 CODATA value for hartree-inverse meter relationship hartree-inverse meter relationship true 12e-3 CODATA value for molar mass of carbon-12 molar mass of carbon-12 0.00000020e5 8.06554465e5 CODATA value for electron volt-inverse meter relationship electron volt-inverse meter relationship 0.000000012e-3 1.521032209e-3 CODATA value for proton magnetic moment to Bohr magneton ratio proton magnetic moment to Bohr magneton ratio 0.000000040e-19 1.602176487e-19 CODATA value for electron volt electron volt 0.00000030e26 6.02214179e26 CODATA value for kilogram-atomic mass unit relationship kilogram-atomic mass unit relationship 0.00000017e-27 3.34358320e-27 CODATA value for deuteron mass deuteron mass 0.00000043e8 1.83247185e8 CODATA value for neutron gyromagnetic ratio neutron gyromagnetic ratio 0.000000027e-29 7.891036433e-29 CODATA value for atomic unit of magnetizability atomic unit of magnetizability 0.0000052 5495.8852765 CODATA value for helion-electron mass ratio helion-electron mass ratio 0.000023 931.494028 CODATA value for atomic mass constant energy equivalent in MeV atomic mass constant energy equivalent in MeV 0.00000025e-3 1.04066882e-3 CODATA value for neutron-electron magnetic moment ratio neutron-electron magnetic moment ratio 0.000013e22 7.242963e22 CODATA value for joule-kelvin relationship joule-kelvin relationship 0.000000060e14 2.417989454e14 CODATA value for elementary charge over h elementary charge over h 0.000000000016e-1 2.418884326505e-17 CODATA value for atomic unit of time atomic unit of time 0.000000000062 4.001506179127 CODATA value for alpha particle mass in atomic mass unit alpha particle mass in atomic mass unit 0.000000040e-19 1.602176487e-19 CODATA value for electron volt-joule relationship electron volt-joule relationship 0.000000083e-27 1.672621637e-27 CODATA value for proton mass proton mass 0.00027e-44 5.39124e-44 CODATA value for Planck time Planck time 0.0000000034e-41 1.6487772536e-41 CODATA value for atomic unit of electric polarizablity atomic unit of electric polarizablity 0.00000011e-42 2.21021870e-42 CODATA value for inverse meter-kilogram relationship inverse meter-kilogram relationship true 101325 CODATA value for standard atmosphere standard atmosphere 0.00000033e-34 6.62606896e-34 CODATA value for hertz-joule relationship hertz-joule relationship 0.000000053e-34 1.054571628e-34 CODATA value for atomic unit of action atomic unit of action 0.00000015e-10 3.00506272e-10 CODATA value for deuteron mass energy equivalent deuteron mass energy equivalent true 25812.807 CODATA value for conventional value of von Klitzing constant conventional value of von Klitzing constant 0.0000051 5496.9215269 CODATA value for triton-electron mass ratio triton-electron mass ratio 0.0000000012e-4 2.7244371093e-4 CODATA value for electron-deuteron mass ratio electron-deuteron mass ratio 0.000000000010e-1 1.519829846006e-16 CODATA value for hertz-hartree relationship hertz-hartree relationship 0.000000039e-4 -4.664345537e-4 CODATA value for deuteron-electron magnetic moment ratio deuteron-electron magnetic moment ratio 0.000000023 2.792847356 CODATA value for proton magnetic moment to nuclear magneton ratio proton magnetic moment to nuclear magneton ratio 0.0000000032e23 2.2523427369e23 CODATA value for atomic mass unit-hertz relationship atomic mass unit-hertz relationship 0.000000017e-3 1.520993128e-3 CODATA value for shielded proton magnetic moment to Bohr magneton ratio shielded proton magnetic moment to Bohr magneton ratio 0.000000046e-23 1.854801830e-23 CODATA value for atomic unit of magnetic dipole moment atomic unit of magnetic dipole moment 0.000000040e-19 1.602176487e-19 CODATA value for elementary charge elementary charge 0.0000011e-6 12.0588349e-6 CODATA value for molar volume of silicon molar volume of silicon 0.000081e-35 1.616252e-35 CODATA value for Planck length Planck length 0.000000037e-26 1.410606662e-26 CODATA value for proton magnetic moment proton magnetic moment 0.000000075e-10 1.505349505e-10 CODATA value for neutron mass energy equivalent neutron mass energy equivalent 0.000000021e-3 1.622393657e-3 CODATA value for triton magnetic moment to Bohr magneton ratio triton magnetic moment to Bohr magneton ratio 0.0000036e10 2.0836644e10 CODATA value for kelvin-hertz relationship kelvin-hertz relationship 0.000070 2808.391383 CODATA value for helion mass energy equivalent in MeV helion mass energy equivalent in MeV 0.00000000010 1.00727646677 CODATA value for proton mass in atomic mass unit proton mass in atomic mass unit true 376.730313461... CODATA value for characteristic impedance of vacuum characteristic impedance of vacuum 0.0000000019e-15 1.3214098446e-15 CODATA value for proton Compton wavelength proton Compton wavelength 0.000061e19 1.220892e19 CODATA value for Planck mass energy equivalent in GeV Planck mass energy equivalent in GeV 0.000015e-5 8.617343e-5 CODATA value for kelvin-electron volt relationship kelvin-electron volt relationship 0.00000053e-13 1.00209955e-13 CODATA value for Mo x unit Mo x unit 0.00000045 -1.91304273 CODATA value for neutron magnetic moment to nuclear magneton ratio neutron magnetic moment to nuclear magneton ratio 0.000000083e-27 1.660538782e-27 CODATA value for unified atomic mass unit unified atomic mass unit 0.000016e-14 9.251098e-14 CODATA value for kelvin-atomic mass unit relationship kelvin-atomic mass unit relationship true 12.566370614...e-7 CODATA value for magnetic constant magnetic constant 0.000093 3727.379109 CODATA value for alpha particle mass energy equivalent in MeV alpha particle mass energy equivalent in MeV 0.0000025e-2 1.4387752e-2 CODATA value for inverse meter-kelvin relationship inverse meter-kelvin relationship 0.00000000000074 -1.00115965218111 CODATA value for electron magnetic moment to Bohr magneton ratio electron magnetic moment to Bohr magneton ratio 0.00000034 13.60569193 CODATA value for Rydberg constant times hc in eV Rydberg constant times hc in eV 0.00000080 1836.15267247 CODATA value for proton-electron mass ratio proton-electron mass ratio 0.000000027e-9 1.073544188e-9 CODATA value for electron volt-atomic mass unit relationship electron volt-atomic mass unit relationship 0.000011e39 6.509651e39 CODATA value for kilogram-kelvin relationship kilogram-kelvin relationship 0.00000016e-16 6.58211899e-16 CODATA value for Planck constant over 2 pi in eV s Planck constant over 2 pi in eV s 0.000000000044e15 6.579683920722e15 CODATA value for hartree-hertz relationship hartree-hertz relationship 0.0000047e25 2.6867774e25 CODATA value for Loschmidt constant 273.15 K 101.325 kPa Loschmidt constant 273.15 K 101.325 kPa 0.000000095e-11 1.692833510e-11 CODATA value for muon mass energy equivalent muon mass energy equivalent true 299792458 CODATA value for speed of light in vacuum speed of light in vacuum 0.000000053e-34 1.054571628e-34 CODATA value for natural unit of action natural unit of action 0.00000014e35 5.60958912e35 CODATA value for kilogram-electron volt relationship kilogram-electron volt relationship 0.00000000010e-3 1.00727646677e-3 CODATA value for proton molar mass proton molar mass 0.000086 0.528740 CODATA value for neutron-tau mass ratio neutron-tau mass ratio 0.0000000000015 -2.0023193043622 CODATA value for electron g factor electron g factor 0.0000012 46.6864515 CODATA value for Bohr magneton in inverse meters per tesla Bohr magneton in inverse meters per tesla 0.00000090 -3.82608545 CODATA value for neutron g factor neutron g factor 0.0024 96485.3399 CODATA value for Faraday constant Faraday constant 0.000000038e-26 1.410570419e-26 CODATA value for shielded proton magnetic moment shielded proton magnetic moment 0.00012 69.50356 CODATA value for kelvin-inverse meter relationship kelvin-inverse meter relationship 0.000000011e14 7.513006671e14 CODATA value for atomic mass unit-inverse meter relationship atomic mass unit-inverse meter relationship 0.00000011e17 2.29371269e17 CODATA value for joule-hartree relationship joule-hartree relationship 0.000000013 0.510998910 CODATA value for natural unit of energy in MeV natural unit of energy in MeV 0.00000000046 1.00137841918 CODATA value for neutron-proton mass ratio neutron-proton mass ratio 0.00000041e-14 8.18710438e-14 CODATA value for natural unit of energy natural unit of energy 0.0069e-15 0.8768e-15 CODATA value for proton rms charge radius proton rms charge radius 0.00000000022 1.99900750108 CODATA value for deuteron-proton mass ratio deuteron-proton mass ratio 0.000023 939.565346 CODATA value for neutron mass energy equivalent in MeV neutron mass energy equivalent in MeV 0.0000000027e-28 0.6652458558e-28 CODATA value for Thomson cross section Thomson cross section 0.0000000029 0.1134289256 CODATA value for muon mass in atomic mass unit muon mass in atomic mass unit 0.00000033e-27 6.64465620e-27 CODATA value for alpha particle mass alpha particle mass 0.00000023e41 4.52443915e41 CODATA value for kilogram-inverse meter relationship kilogram-inverse meter relationship 0.00000000017 0.11962656472 CODATA value for molar Planck constant times c molar Planck constant times c 0.000000056e8 2.037894730e8 CODATA value for shielded helion gyromagnetic ratio shielded helion gyromagnetic ratio 0.0000000012 -2.0023318414 CODATA value for muon g factor muon g factor true 1.112650056...e-10 CODATA value for atomic unit of permittivity atomic unit of permittivity 0.00000030e-10 5.97191917e-10 CODATA value for alpha particle mass energy equivalent alpha particle mass energy equivalent 0.0000012 0.6717131 CODATA value for Bohr magneton in K per T Bohr magneton in K per T 0.000073 10973731.568527 CODATA value for Rydberg constant Rydberg constant 0.00000016e18 6.24150965e18 CODATA value for joule-electron volt relationship joule-electron volt relationship 0.00000010e-15 4.13566733e-15 CODATA value for Planck constant in eV s Planck constant in eV s 0.00000000030e-15 0.21030890861e-15 CODATA value for proton Compton wavelength over 2 pi proton Compton wavelength over 2 pi 0.00000037e-51 7.37249600e-51 CODATA value for hertz-kilogram relationship hertz-kilogram relationship 0.00000023 8.88024339 CODATA value for proton-muon mass ratio proton-muon mass ratio 0.0000000025 2.9937170309 CODATA value for triton-proton mass ratio triton-proton mass ratio 0.00000022e-18 4.35974394e-18 CODATA value for atomic unit of energy atomic unit of energy 0.000000013 0.510998910 CODATA value for electron mass energy equivalent in MeV electron mass energy equivalent in MeV 0.00011e-8 2.17644e-8 CODATA value for Planck mass Planck mass 0.0000000050e-3 7.2973525376e-3 CODATA value for fine-structure constant fine-structure constant 0.000018 25812.807557 CODATA value for von Klitzing constant von Klitzing constant 0.0000052 206.7669877 CODATA value for electron-muon magnetic moment ratio electron-muon magnetic moment ratio 0.0000052 206.7682823 CODATA value for muon-electron mass ratio muon-electron mass ratio true 1e-3 CODATA value for molar mass constant molar mass constant 0.0000031 7294.299537 CODATA value for alpha particle-electron mass ratio alpha particle-electron mass ratio 0.00000053e-15 386.15926459e-15 CODATA value for Compton wavelength over 2 pi Compton wavelength over 2 pi 0.00000019 7.62259384 CODATA value for nuclear magneton in MHz per T nuclear magneton in MHz per T 0.0000069 29.1646954 CODATA value for neutron gyromagnetic ratio over 2 pi neutron gyromagnetic ratio over 2 pi 0.000047 1875.612793 CODATA value for deuteron mass energy equivalent in MeV deuteron mass energy equivalent in MeV true 299792458 CODATA value for inverse meter-hertz relationship inverse meter-hertz relationship 0.0000088 12906.4037787 CODATA value for inverse of conductance quantum inverse of conductance quantum 0.00000045e-31 9.10938215e-31 CODATA value for natural unit of mass natural unit of mass 0.00097e-2 5.94592e-2 CODATA value for muon-tau mass ratio muon-tau mass ratio 0.000000053e-34 1.054571628e-34 CODATA value for Planck constant over 2 pi Planck constant over 2 pi 0.00000016e-26 -4.49044786e-26 CODATA value for muon magnetic moment muon magnetic moment 0.00000013e-27 5.05078324e-27 CODATA value for nuclear magneton nuclear magneton true 299792458 CODATA value for natural unit of velocity natural unit of velocity 0.00031 1.90768 CODATA value for tau mass in atomic mass unit tau mass in atomic mass unit 0.000000081e-53 3.206361533e-53 CODATA value for atomic unit of 1st hyperpolarizablity atomic unit of 1st hyperpolarizablity 0.000000044e11 1.760859770e11 CODATA value for electron gyromagnetic ratio electron gyromagnetic ratio 0.00067e-11 6.67428e-11 CODATA value for Newtonian constant of gravitation Newtonian constant of gravitation 0.00000025e24 5.03411747e24 CODATA value for joule-inverse meter relationship joule-inverse meter relationship 0.00000028e-13 1.00207699e-13 CODATA value for Cu x unit Cu x unit 0.000000076 5.957924896 CODATA value for triton g factor triton g factor 0.00000016 -0.68497934 CODATA value for neutron-proton magnetic moment ratio neutron-proton magnetic moment ratio 0.0000055e5 3.1577465e5 CODATA value for hartree-kelvin relationship hartree-kelvin relationship 0.00000030e23 6.02214179e23 CODATA value for Avogadro constant Avogadro constant 0.000000074e-10 1.492417830e-10 CODATA value for atomic mass constant energy equivalent atomic mass constant energy equivalent 0.0000000050e-4 3.6369475199e-4 CODATA value for quantum of circulation quantum of circulation 0.000015 8.314472 CODATA value for molar gas constant molar gas constant 0.000000014e-3 -1.158671471e-3 CODATA value for shielded helion magnetic moment to Bohr magneton ratio shielded helion magnetic moment to Bohr magneton ratio 0.000000064e-2 2.542623616e-2 CODATA value for nuclear magneton in inverse meters per tesla nuclear magneton in inverse meters per tesla 0.00000060e-3 1.16592069e-3 CODATA value for muon magnetic moment anomaly muon magnetic moment anomaly 0.00000068 27.21138386 CODATA value for atomic unit of electric potential atomic unit of electric potential 0.00000017e-3 6.62361763e-3 CODATA value for atomic unit of current atomic unit of current 0.0000000024e-4 5.4461702177e-4 CODATA value for electron-proton mass ratio electron-proton mass ratio 0.000023e6 931.494028e6 CODATA value for atomic mass unit-electron volt relationship atomic mass unit-electron volt relationship 0.00000021e-30 8.47835281e-30 CODATA value for atomic unit of electric dipole mom. atomic unit of electric dipole mom. 0.0000000053e-5 7.7480917004e-5 CODATA value for conductance quantum conductance quantum 0.00000000043 1.00866491597 CODATA value for neutron mass in atomic mass unit neutron mass in atomic mass unit 0.0000016 3670.4829654 CODATA value for deuteron-electron mass ratio deuteron-electron mass ratio 0.000000099e-24 1.992851565e-24 CODATA value for atomic unit of momentum atomic unit of momentum 0.000000046 5.585694713 CODATA value for proton g factor proton g factor 0.0000000072 0.8574382308 CODATA value for deuteron magnetic moment to nuclear magneton ratio deuteron magnetic moment to nuclear magneton ratio 0.00000000046 0.99862347824 CODATA value for proton-neutron mass ratio proton-neutron mass ratio 0.00000023 8.89248409 CODATA value for neutron-muon mass ratio neutron-muon mass ratio 0.0000011 1838.6836605 CODATA value for neutron-electron mass ratio neutron-electron mass ratio 0.0000000020e-15 1.3195908951e-15 CODATA value for neutron Compton wavelength neutron Compton wavelength 0.00070 28024.95364 CODATA value for electron gyromagnetic ratio over 2 pi electron gyromagnetic ratio over 2 pi 0.00023 960.92050 CODATA value for electron-neutron magnetic moment ratio electron-neutron magnetic moment ratio 0.0000072 -658.2275971 CODATA value for electron to shielded proton magnetic moment ratio electron to shielded proton magnetic moment ratio 0.0000000026 2.9931526713 CODATA value for helion-proton mass ratio helion-proton mass ratio 0.0000000033e-4 5.4386734459e-4 CODATA value for electron-neutron mass ratio electron-neutron mass ratio 0.00000016 -0.68499694 CODATA value for neutron to shielded proton magnetic moment ratio neutron to shielded proton magnetic moment ratio 0.0000027e-40 1.5361807e-40 CODATA value for kelvin-kilogram relationship kelvin-kilogram relationship 0.000000010 1.066639908 CODATA value for triton-proton magnetic moment ratio triton-proton magnetic moment ratio 0.000010e10 5.878933e10 CODATA value for Wien frequency displacement law constant Wien frequency displacement law constant 0.0000000029 0.1126095261 CODATA value for muon-proton mass ratio muon-proton mass ratio 0.000040e-8 5.670400e-8 CODATA value for Stefan-Boltzmann constant Stefan-Boltzmann constant 0.0000000025 3.0155007134 CODATA value for triton mass in atomic mass unit triton mass in atomic mass unit 0.00000000043e-3 1.00866491597e-3 CODATA value for neutron molar mass neutron molar mass 0.00000045e-31 9.10938215e-31 CODATA value for electron mass electron mass 0.00000012e-3 4.83633171e-3 CODATA value for electron-muon mass ratio electron-muon mass ratio 0.00000012e-3 -4.84197049e-3 CODATA value for muon magnetic moment to Bohr magneton ratio muon magnetic moment to Bohr magneton ratio true 1.112650056...e-17 CODATA value for joule-kilogram relationship joule-kilogram relationship 0.00000016e-16 6.58211899e-16 CODATA value for natural unit of action in eV s natural unit of action in eV s 0.00000024e7 9.57883392e7 CODATA value for proton charge to mass quotient proton charge to mass quotient 0.0000000023e-7 5.4857990943e-7 CODATA value for electron molar mass electron molar mass 0.000000059e-16 1.191042759e-16 CODATA value for first radiation constant for spectral radiance first radiation constant for spectral radiance 0.00000090 32.43410198 CODATA value for shielded helion gyromagnetic ratio over 2 pi shielded helion gyromagnetic ratio over 2 pi 0.00052e-27 3.16777e-27 CODATA value for tau mass tau mass 0.0000050e-12 192.0155762e-12 CODATA value for lattice spacing of silicon lattice spacing of silicon 0.0000000039e-3 0.4669754556e-3 CODATA value for deuteron magnetic moment to Bohr magneton ratio deuteron magnetic moment to Bohr magneton ratio 0.0000000026 3.0149322473 CODATA value for helion mass in atomic mass unit helion mass in atomic mass unit 0.0000000042e-8 2.9212622986e-8 CODATA value for hartree-atomic mass unit relationship hartree-atomic mass unit relationship 0.00000022e-18 4.35974394e-18 CODATA value for Hartree energy Hartree energy 0.000014e-12 543.102064e-12 CODATA value for lattice parameter of silicon lattice parameter of silicon 0.00000011e-28 1.88353130e-28 CODATA value for muon mass muon mass 0.00000025e-27 5.00735588e-27 CODATA value for triton mass triton mass 0.000000010e-4 7.273895040e-4 CODATA value for quantum of circulation times 2 quantum of circulation times 2 0.0027 16.8183 CODATA value for tau-muon mass ratio tau-muon mass ratio 0.000071e32 1.416785e32 CODATA value for Planck temperature Planck temperature 0.0000000029e-3 0.1134289256e-3 CODATA value for muon molar mass muon molar mass 0.00000010e34 2.06148616e34 CODATA value for kilogram-hartree relationship kilogram-hartree relationship 0.0000012 42.5763881 CODATA value for shielded proton gyromagnetic ratio over 2 pi shielded proton gyromagnetic ratio over 2 pi 0.00000035e9 13.99624604e9 CODATA value for Bohr magneton in Hz perT Bohr magneton in Hz perT 0.0000000072 0.8574382308 CODATA value for deuteron g factor deuteron g factor 0.000000060e14 2.417989454e14 CODATA value for electron volt-hertz relationship electron volt-hertz relationship 0.0000000025e-3 3.0155007134e-3 CODATA value for triton molar mass triton molar mass 0.0000000064e-24 4.4398216294e-24 CODATA value for hertz-atomic mass unit relationship hertz-atomic mass unit relationship 0.0000084e-11 4.7992374e-11 CODATA value for hertz-kelvin relationship hertz-kelvin relationship 0.0000051e-3 2.8977685e-3 CODATA value for Wien wavelength displacement law constant Wien wavelength displacement law constant 0.0000000033e-12 2.4263102175e-12 CODATA value for Compton wavelength Compton wavelength 0.0000054 -658.2106848 CODATA value for electron-proton magnetic moment ratio electron-proton magnetic moment ratio 0.0000000079e-5 5.7883817555e-5 CODATA value for Bohr magneton in eV per T Bohr magneton in eV per T 0.0000044 -1.1517047 CODATA value for Sackur-Tetrode constant 1 K 100 kPa Sackur-Tetrode constant 1 K 100 kPa 0.0000025e-2 1.4387752e-2 CODATA value for second radiation constant second radiation constant 0.000010 864.058257 CODATA value for electron to shielded helion magnetic moment ratio electron to shielded helion magnetic moment ratio 0.000000085 -3.183345137 CODATA value for muon-proton magnetic moment ratio muon-proton magnetic moment ratio 0.00000090e-10 1.00001498e-10 CODATA value for Angstrom star Angstrom star 0.000015e-5 8.617343e-5 CODATA value for Boltzmann constant in eV per K Boltzmann constant in eV per K 0.0000011 42.5774821 CODATA value for proton gyromagnetic ratio over 2 pi proton gyromagnetic ratio over 2 pi 0.00000000074e-3 1.15965218111e-3 CODATA value for electron magnetic moment anomaly electron magnetic moment anomaly 0.00000033e-34 6.62606896e-34 CODATA value for Planck constant Planck constant 0.000000030e-26 -1.074552982e-26 CODATA value for shielded helion magnetic moment shielded helion magnetic moment 0.00000031e-65 6.23538095e-65 CODATA value for atomic unit of 2nd hyperpolarizablity atomic unit of 2nd hyperpolarizablity 0.0000055e-6 3.1668153e-6 CODATA value for kelvin-hartree relationship kelvin-hartree relationship 0.0000049 197.3269631 CODATA value for Planck constant over 2 pi times c in MeV fm Planck constant over 2 pi times c in MeV fm 0.000000021e-3 -1.620514423e-3 CODATA value for triton-electron magnetic moment ratio triton-electron magnetic moment ratio 0.00000000031e-15 0.21001941382e-15 CODATA value for neutron Compton wavelength over 2 pi neutron Compton wavelength over 2 pi 0.00000022e-10 4.50038703e-10 CODATA value for triton mass energy equivalent triton mass energy equivalent 0.0000024e-23 1.3806504e-23 CODATA value for kelvin-joule relationship kelvin-joule relationship 0.0000000045e-8 3.1524512326e-8 CODATA value for nuclear magneton in eV per T nuclear magneton in eV per T 0.000000059e5 2.350517382e5 CODATA value for atomic unit of magnetic flux density atomic unit of magnetic flux density 0.0000000019e-15 1.3310250394e-15 CODATA value for inverse meter-atomic mass unit relationship inverse meter-atomic mass unit relationship 0.000070 2808.920906 CODATA value for triton mass energy equivalent in MeV triton mass energy equivalent in MeV 0.00000000041 3.97259968951 CODATA value for alpha particle-proton mass ratio alpha particle-proton mass ratio 0.00000013e11 5.14220632e11 CODATA value for atomic unit of electric field atomic unit of electric field 0.00011e-15 0.69772e-15 CODATA value for tau Compton wavelength tau Compton wavelength 0.012e9 483597.891e9 CODATA value for Josephson constant Josephson constant 0.000018e-15 0.111046e-15 CODATA value for tau Compton wavelength over 2 pi tau Compton wavelength over 2 pi 0.000040e-3 22.710981e-3 CODATA value for molar volume of ideal gas 273.15 K 100 kPa molar volume of ideal gas 273.15 K 100 kPa true 8.987551787...e16 CODATA value for kilogram-joule relationship kilogram-joule relationship 0.0000020e4 1.1604505e4 CODATA value for electron volt-kelvin relationship electron volt-kelvin relationship 0.00000022e-10 4.49953864e-10 CODATA value for helion mass energy equivalent helion mass energy equivalent 0.000000074e-10 1.492417830e-10 CODATA value for atomic mass unit-joule relationship atomic mass unit-joule relationship 0.000000040e-19 1.602176487e-19 CODATA value for atomic unit of charge atomic unit of charge 0.000000084e-27 1.674927211e-27 CODATA value for neutron mass neutron mass 0.0000000057e-10 3.9903126821e-10 CODATA value for molar Planck constant molar Planck constant 0.000000075e33 1.509190450e33 CODATA value for joule-hertz relationship joule-hertz relationship 0.000000092e-2 3.674932540e-2 CODATA value for electron volt-hartree relationship electron volt-hartree relationship 0.000000047e-15 1.867594295e-15 CODATA value for muon Compton wavelength over 2 pi muon Compton wavelength over 2 pi true 9.80665 CODATA value for standard acceleration of gravity standard acceleration of gravity 0.00046e-10 2.84705e-10 CODATA value for tau mass energy equivalent tau mass energy equivalent 0.000000013 0.510998910 CODATA value for natural unit of momentum in MeV c^-1 natural unit of momentum in MeV c^-1 0.00000014e-22 2.73092406e-22 CODATA value for natural unit of momentum natural unit of momentum 0.000000073e8 2.675153362e8 CODATA value for shielded proton gyromagnetic ratio shielded proton gyromagnetic ratio 0.014e-6 25.694e-6 CODATA value for proton mag. shielding correction proton mag. shielding correction 0.000000083e-27 1.660538782e-27 CODATA value for atomic mass constant atomic mass constant 0.00000068 27.21138386 CODATA value for hartree-electron volt relationship hartree-electron volt relationship 0.00000025e-3 -1.04187563e-3 CODATA value for neutron magnetic moment to Bohr magneton ratio neutron magnetic moment to Bohr magneton ratio 0.00001e-5 1.16637e-5 CODATA value for Fermi coupling constant Fermi coupling constant 0.0000036e10 2.0836644e10 CODATA value for Boltzmann constant in Hz per K Boltzmann constant in Hz per K 0.000000042e-26 1.504609361e-26 CODATA value for triton magnetic moment triton magnetic moment 0.0000064e-4 3.6582637e-4 CODATA value for nuclear magneton in K per T nuclear magneton in K per T true 8.854187817...e-12 CODATA value for electric constant electric constant 0.0000000023e-4 5.4857990943e-4 CODATA value for electron mass in atomic mass unit electron mass in atomic mass unit 0.00000011 -0.44820652 CODATA value for deuteron-neutron magnetic moment ratio deuteron-neutron magnetic moment ratio 0.0000038 105.6583668 CODATA value for muon mass energy equivalent in MeV muon mass energy equivalent in MeV 0.00012 69.50356 CODATA value for Boltzmann constant in inverse meters per kelvin Boltzmann constant in inverse meters per kelvin 0.00000041e-14 8.18710438e-14 CODATA value for electron mass energy equivalent electron mass energy equivalent 0.000000075e-10 1.503277359e-10 CODATA value for proton mass energy equivalent proton mass energy equivalent 0.000000000062e-3 4.001506179127e-3 CODATA value for alpha particle molar mass alpha particle molar mass 0.00047e-4 2.87564e-4 CODATA value for electron-tau mass ratio electron-tau mass ratio 0.0000000033 -0.7617861313 CODATA value for shielded helion to shielded proton magnetic moment ratio shielded helion to shielded proton magnetic moment ratio 0.000018 -2143.923498 CODATA value for electron-deuteron magnetic moment ratio electron-deuteron magnetic moment ratio 0.000039e-3 22.413996e-3 CODATA value for molar volume of ideal gas 273.15 K 101.325 kPa molar volume of ideal gas 273.15 K 101.325 kPa 0.00000034 -1.45989806 CODATA value for proton-neutron magnetic moment ratio proton-neutron magnetic moment ratio 0.0000019e13 1.0809527e13 CODATA value for atomic mass unit-kelvin relationship atomic mass unit-kelvin relationship 0.0000000015e6 2.1876912541e6 CODATA value for atomic unit of velocity atomic unit of velocity