CODATA 2022 + astrophysical constants Most quantities have been converted to CGS Generated on Feb 10, 2025 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Reference: Mohr, P. , Tiesinga, E. , Newell, D. and Taylor, B. (2024), Codata Internationally Recommended 2022 Values of the Fundamental Physical Constants, Codata Internationally Recommended 2022 Values of the Fundamental Physical Constants, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=958002, https://physics.nist.gov/constants (Accessed February 10, 2025) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Symbol Name Value Unit Uncertainty Source ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- wienK Wien displacement law constant 2.89776850e-01 K cm 5.10000000e-07 CODATA2022 au1Hyper atomic unit of 1st hyperpolarizablity 3.20636151e-53 C^3 m^3 J^-2 2.80000000e-60 CODATA2022 au2Hyper atomic unit of 2nd hyperpolarizablity 6.23538080e-65 C^4 m^4 J^-3 1.10000000e-71 CODATA2022 auEDip atomic unit of electric dipole moment 8.47835309e-30 C m 7.30000000e-37 CODATA2022 auEPol atomic unit of electric polarizablity 1.64877727e-41 C^2 m^2 J^-1 1.60000000e-49 CODATA2022 auEQuad atomic unit of electric quadrupole moment 4.48655124e-40 C m^2 3.90000000e-47 CODATA2022 auMDip atomic unit of magn. dipole moment 1.85480190e-23 J T^-1 1.60000000e-30 CODATA2022 auMFlux atomic unit of magn. flux density 2.35051757e+09 G 7.10000000e-01 CODATA2022 muD deuteron magn. moment 4.33073482e-27 J T^-1 3.80000000e-34 CODATA2022 muD_Bhor deuteron magn. moment to Bohr magneton ratio 4.66975457e-04 5.00000000e-12 CODATA2022 muD_Nuc deuteron magn. moment to nuclear magneton ratio 8.57438233e-01 9.20000000e-09 CODATA2022 muD_e deuteron-electron magn. moment ratio -4.66434555e-04 5.00000000e-12 CODATA2022 muD_p deuteron-proton magn. moment ratio 3.07012208e-01 4.50000000e-09 CODATA2022 muD_n deuteron-neutron magn. moment ratio -4.48206520e-01 1.10000000e-07 CODATA2022 rgE electron gyromagn. ratio 1.76085963e+11 s^-1 T^-1 5.30000000e+01 CODATA2022 rgE_2pi electron gyromagn. ratio over 2 pi 2.80249532e+04 MHz T^-1 2.40000000e-03 CODATA2022 muE electron magn. moment -9.28476412e-24 J T^-1 8.00000000e-31 CODATA2022 muE_Bhor electron magn. moment to Bohr magneton ratio -1.00115965e+00 3.80000000e-12 CODATA2022 muE_Nuc electron magn. moment to nuclear magneton ratio -1.83828197e+03 8.50000000e-07 CODATA2022 muE_anom electron magn. moment anomaly 1.15965219e-03 3.80000000e-12 CODATA2022 muE_muP_shield electron to shielded proton magn. moment ratio -6.58227596e+02 7.10000000e-06 CODATA2022 muE_muH_shield electron to shielded helion magn. moment ratio 8.64058255e+02 1.00000000e-05 CODATA2022 muE_D electron-deuteron magn. moment ratio -2.14392349e+03 2.30000000e-05 CODATA2022 muE_mu electron-muon magn. moment ratio 2.06766989e+02 5.40000000e-06 CODATA2022 muE_n electron-neutron magn. moment ratio 9.60920500e+02 2.30000000e-04 CODATA2022 muE_p electron-proton magn. moment ratio -6.58210686e+02 6.60000000e-06 CODATA2022 mu0 magn. constant 1.25663706e-06 N A^-2 0.00000000e+00 CODATA2022 phi0 magn. flux quantum 2.06783385e-15 Wb 0.00000000e+00 CODATA2022 muMu muon magn. moment -4.49044799e-26 J T^-1 4.00000000e-33 CODATA2022 muMu_Bhor muon magn. moment to Bohr magneton ratio -4.84197045e-03 1.30000000e-10 CODATA2022 muMu_Nuc muon magn. moment to nuclear magneton ratio -8.89059698e+00 2.30000000e-07 CODATA2022 muMu_p muon-proton magn. moment ratio -3.18334512e+00 8.90000000e-08 CODATA2022 rgN neutron gyromagn. ratio 1.83247171e+08 s^-1 T^-1 4.30000000e+01 CODATA2022 rgN_2pi neutron gyromagn. ratio over 2 pi 2.91646950e+01 MHz T^-1 7.30000000e-06 CODATA2022 muN neutron magn. moment -9.66236450e-27 J T^-1 2.40000000e-33 CODATA2022 muN_Bhor neutron magn. moment to Bohr magneton ratio -1.04187563e-03 2.50000000e-10 CODATA2022 muN_Nuc neutron magn. moment to nuclear magneton ratio -1.91304273e+00 4.50000000e-07 CODATA2022 muN_p_shield neutron to shielded proton magn. moment ratio -6.84996940e-01 1.60000000e-07 CODATA2022 muN_e neutron-electron magn. moment ratio 1.04066882e-03 2.50000000e-10 CODATA2022 muN_p neutron-proton magn. moment ratio -6.84979340e-01 1.60000000e-07 CODATA2022 rgP proton gyromagn. ratio 2.67522187e+08 s^-1 T^-1 1.10000000e-01 CODATA2022 rgP_2pi proton gyromagn. ratio over 2 pi 4.25774813e+01 MHz T^-1 3.70000000e-06 CODATA2022 muP proton magn. moment 1.41060671e-26 J T^-1 1.20000000e-33 CODATA2022 muP_Bhor proton magn. moment to Bohr magneton ratio 1.52103221e-03 1.50000000e-11 CODATA2022 muP_Nuc proton magn. moment to nuclear magneton ratio 2.79284735e+00 2.80000000e-08 CODATA2022 muP_shield proton magn. shielding correction 2.56890000e-05 1.10000000e-08 CODATA2022 muP_n proton-neutron magn. moment ratio -1.45989805e+00 3.40000000e-07 CODATA2022 rgH shielded helion gyromagn. ratio 2.03789457e+08 s^-1 T^-1 2.40000000e+00 CODATA2022 rgH_2pi shielded helion gyromagn. ratio over 2 pi 3.24341015e+01 MHz T^-1 2.80000000e-06 CODATA2022 muH_shield shielded helion magn. moment -1.07455302e-26 J T^-1 9.30000000e-34 CODATA2022 muH_shield_Bhor shielded helion magn. moment to Bohr magneton rati -1.15867147e-03 1.40000000e-11 CODATA2022 muH_shield_Nuc shielded helion magn. moment to nuclear magneton r -2.12749772e+00 2.50000000e-08 CODATA2022 muH_shield_p shielded helion to proton magn. moment ratio -7.61766562e-01 1.20000000e-08 CODATA2022 muH_shield_p_shield shielded helion to shielded proton magn. moment ra -7.61786131e-01 3.30000000e-09 CODATA2022 muP_shield shielded proton magn. moment 1.41057047e-26 J T^-1 1.20000000e-33 CODATA2022 muP_shield_Bhor shielded proton magn. moment to Bohr magneton rati 1.52099313e-03 1.60000000e-11 CODATA2022 muP_shield_Nuc shielded proton magn. moment to nuclear magneton r 2.79277560e+00 3.00000000e-08 CODATA2022 aSi_220 {220} lattice spacing of silicon 1.92015571e-08 cm 3.20000000e-16 CODATA2022 aSi lattice spacing of silicon 1.92015576e-08 cm 5.00000000e-16 CODATA2022 mAlpha_e alpha particle-electron mass ratio 7.29429954e+03 2.40000000e-07 CODATA2022 mAlpha alpha particle mass 6.64465734e-24 g 2.00000000e-33 CODATA2022 EAlpha alpha particle mass energy equivalent 5.97192019e-03 erg 1.80000000e-12 CODATA2022 EAlpha_MeV alpha particle mass energy equivalent in MeV 5.97192019e-03 erg 1.76239430e-12 CODATA2022 mAlpha_u alpha particle mass in u 6.64465734e-24 g 1.04613961e-34 CODATA2022 MAlpha alpha particle molar mass 4.00150618e+00 g / mol 1.20000000e-09 CODATA2022 mAlpha_p alpha particle-proton mass ratio 3.97259969e+00 2.20000000e-10 CODATA2022 angstromStar Angstrom star 1.00001495e-08 cm 9.00000000e-15 CODATA2022 mU atomic mass constant 1.66053907e-24 g 5.00000000e-34 CODATA2022 mU_E atomic mass constant energy equivalent 1.49241809e-03 erg 4.50000000e-13 CODATA2022 mU_E_MeV atomic mass constant energy equivalent in MeV 1.49241809e-03 erg 4.48609458e-13 CODATA2022 mU_eV atomic mass unit-electron volt relationship 1.49241809e-03 erg 4.48609458e-13 CODATA2022 mU_hartree atomic mass unit-hartree relationship 3.42317769e+07 E_h 1.00000000e-02 CODATA2022 mU_Hz atomic mass unit-hertz relationship 2.25234272e+23 1 / s 6.80000000e+13 CODATA2022 mU_invm atomic mass unit-inverse meter relationship 7.51300661e+12 1 / cm 2.30000000e+03 CODATA2022 mU_J atomic mass unit-joule relationship 1.49241809e-03 erg 4.50000000e-13 CODATA2022 mU_K atomic mass unit-kelvin relationship 1.08095402e+13 K 3.30000000e+03 CODATA2022 mU_kg atomic mass unit-kilogram relationship 1.66053907e-24 g 5.00000000e-34 CODATA2022 au1Hyper atomic unit of 1st hyperpolarizability 3.20636131e-53 C^3 m^3 J^-2 1.50000000e-62 CODATA2022 au2Hyper atomic unit of 2nd hyperpolarizability 6.23537999e-65 C^4 m^4 J^-3 3.80000000e-74 CODATA2022 auAct atomic unit of action 1.05457182e-27 erg s 0.00000000e+00 CODATA2022 auC atomic unit of charge 1.60217663e-19 C 0.00000000e+00 CODATA2022 auCrho atomic unit of charge density 1.08120238e+12 C m^-3 4.90000000e+02 CODATA2022 auI atomic unit of current 6.62361824e-03 A 1.30000000e-14 CODATA2022 auMu atomic unit of electric dipole mom. 8.47835363e-30 C m 1.30000000e-39 CODATA2022 auE atomic unit of electric field 5.14220675e+11 V m^-1 7.80000000e+01 CODATA2022 auEFG atomic unit of electric field gradient 9.71736243e+21 V m^-2 2.90000000e+12 CODATA2022 auPol atomic unit of electric polarizability 1.64877727e-41 C^2 m^2 J^-1 5.00000000e-51 CODATA2022 auV atomic unit of electric potential 2.72113862e+01 V 5.30000000e-11 CODATA2022 auQuad atomic unit of electric quadrupole mom. 4.48655152e-40 C m^2 1.40000000e-49 CODATA2022 Eh atomic unit of energy 4.35974472e-11 erg 8.50000000e-23 CODATA2022 auF atomic unit of force 8.23872350e-03 dyn 1.20000000e-12 CODATA2022 auL atomic unit of length 5.29177211e-09 cm 8.00000000e-19 CODATA2022 auM atomic unit of mag. dipole mom. 1.85480202e-23 J T^-1 5.60000000e-33 CODATA2022 auB atomic unit of mag. flux density 2.35051757e+09 G 7.10000000e-01 CODATA2022 auChi atomic unit of magnetizability 7.89103660e-29 J T^-2 4.80000000e-38 CODATA2022 amu atomic unit of mass 9.10938370e-28 g 2.80000000e-37 CODATA2022 aup atomic unit of momentum 1.99285191e-19 dyn s 3.00000000e-29 CODATA2022 auEps atomic unit of permittivity 1.11265006e-10 F m^-1 1.70000000e-20 CODATA2022 aut atomic unit of time 2.41888433e-17 s 4.70000000e-29 CODATA2022 auv atomic unit of velocity 2.18769126e+08 cm / s 3.30000000e-02 CODATA2022 N_a Avogadro constant 6.02214076e+23 1 / mol 0.00000000e+00 CODATA2022 mu_B Bohr magneton 9.27401008e-24 J T^-1 2.80000000e-33 CODATA2022 mu_B_eV_T Bohr magneton in eV/T 5.78838181e-05 eV T^-1 1.70000000e-14 CODATA2022 mu_B_Hz_T Bohr magneton in Hz/T 1.39962449e+10 Hz T^-1 4.20000000e+00 CODATA2022 mu_B__mT Bohr magneton in inverse meters per tesla 4.66864481e+01 m^-1 T^-1 2.90000000e-07 CODATA2022 muB_K_T Bohr magneton in K/T 6.71713816e-01 K T^-1 2.00000000e-10 CODATA2022 rBhor Bohr radius 5.29177211e-09 cm 8.00000000e-19 CODATA2022 kB Boltzmann constant 1.38064900e-16 erg / K 0.00000000e+00 CODATA2022 kB_eV_K Boltzmann constant in eV/K 1.38064900e-16 erg / K 0.00000000e+00 CODATA2022 kB_Hz_K Boltzmann constant in Hz/K 2.08366191e+10 1 / (K s) 0.00000000e+00 CODATA2022 kB__MK Boltzmann constant in inverse meters per kelvin 6.95034570e-01 1 / (K cm) 4.00000000e-07 CODATA2022 Z0 characteristic impedance of vacuum 3.76730314e+02 ohm 5.61366546e-08 CODATA2022 re classical electron radius 2.81794033e-13 cm 1.30000000e-22 CODATA2022 lambda_compt Compton wavelength 2.42631024e-10 cm 7.30000000e-20 CODATA2022 lambda_compt_2pi Compton wavelength over 2 pi 3.86159268e-11 cm 1.80000000e-20 CODATA2022 G0 conductance quantum 7.74809173e-05 S 0.00000000e+00 CODATA2022 K_J-90 conventional value of Josephson constant 4.83597900e+14 Hz V^-1 0.00000000e+00 CODATA2022 R_K-90 conventional value of von Klitzing constant 2.58128070e+04 ohm 0.00000000e+00 CODATA2022 xu(CuKa1) Cu x unit 1.00207697e-11 cm 2.80000000e-18 CODATA2022 muD_e deuteron-electron mag. mom. ratio -4.66434555e-04 1.20000000e-12 CODATA2022 mD_e deuteron-electron mass ratio 3.67048297e+03 1.30000000e-07 CODATA2022 g_D deuteron g factor 8.57438234e-01 2.20000000e-09 CODATA2022 muD deuteron mag. mom. 4.33073509e-27 J T^-1 1.10000000e-35 CODATA2022 muD_Bhor deuteron mag. mom. to Bohr magneton ratio 4.66975457e-04 1.20000000e-12 CODATA2022 muD_Nuc deuteron mag. mom. to nuclear magneton ratio 8.57438234e-01 2.20000000e-09 CODATA2022 mD deuteron mass 3.34358377e-24 g 1.00000000e-33 CODATA2022 mD_E deuteron mass energy equivalent 3.00506323e-03 erg 9.10000000e-13 CODATA2022 mD_E_MeV deuteron mass energy equivalent in MeV 3.00506323e-03 erg 9.13240681e-13 CODATA2022 mD_u deuteron mass in u 3.34358377e-24 g 6.64215627e-35 CODATA2022 MD deuteron molar mass 2.01355321e+00 g / mol 6.10000000e-10 CODATA2022 muD_n deuteron-neutron mag. mom. ratio -4.48206530e-01 1.10000000e-07 CODATA2022 muD_p deuteron-proton mag. mom. ratio 3.07012209e-01 7.90000000e-10 CODATA2022 mD_p deuteron-proton mass ratio 1.99900750e+00 1.10000000e-10 CODATA2022 RrmsD deuteron rms charge radius 2.12799000e-13 cm 7.40000000e-17 CODATA2022 eps_0 electric constant 8.85418781e-12 F m^-1 1.30000000e-21 CODATA2022 qE_m electron charge to mass quotient -1.75882001e+11 C kg^-1 5.30000000e+01 CODATA2022 muE_D electron-deuteron mag. mom. ratio -2.14392349e+03 5.60000000e-06 CODATA2022 mE_D electron-deuteron mass ratio 2.72443711e-04 9.60000000e-15 CODATA2022 g_e electron g factor -2.00231930e+00 3.50000000e-13 CODATA2022 rg_e electron gyromag. ratio 1.76085963e+11 s^-1 T^-1 5.30000000e+01 CODATA2022 rg_e_2pi electron gyromag. ratio over 2 pi 2.80249516e+04 MHz T^-1 1.70000000e-04 CODATA2022 muE electron mag. mom. -9.28476470e-24 J T^-1 2.80000000e-33 CODATA2022 muE_anom electron mag. mom. anomaly 1.15965218e-03 1.80000000e-13 CODATA2022 muE_Bhor electron mag. mom. to Bohr magneton ratio -1.00115965e+00 1.80000000e-13 CODATA2022 muE_Nuc electron mag. mom. to nuclear magneton ratio -1.83828197e+03 1.10000000e-07 CODATA2022 mE electron mass 9.10938370e-28 g 2.80000000e-37 CODATA2022 mE_E electron mass energy equivalent 8.18710578e-07 erg 2.50000000e-16 CODATA2022 mE_MeV electron mass energy equivalent in MeV 8.18710578e-07 erg 2.40326495e-16 CODATA2022 mE_u electron mass in u 9.10938370e-28 g 2.65686251e-38 CODATA2022 ME electron molar mass 5.48579909e-04 g / mol 1.70000000e-13 CODATA2022 muE_mu electron-muon mag. mom. ratio 2.06766988e+02 4.60000000e-06 CODATA2022 mE_mu electron-muon mass ratio 4.83633169e-03 1.10000000e-10 CODATA2022 muE_n electron-neutron mag. mom. ratio 9.60920500e+02 2.30000000e-04 CODATA2022 mE_n electron-neutron mass ratio 5.43867344e-04 2.60000000e-13 CODATA2022 muE_p electron-proton mag. mom. ratio -6.58210688e+02 2.00000000e-07 CODATA2022 mE_p electron-proton mass ratio 5.44617021e-04 3.30000000e-14 CODATA2022 mE_tau electron-tau mass ratio 2.87585000e-04 1.90000000e-08 CODATA2022 mE_alpha electron to alpha particle mass ratio 1.37093355e-04 4.50000000e-15 CODATA2022 muE_H_shield electron to shielded helion mag. mom. ratio 8.64058257e+02 1.00000000e-05 CODATA2022 muE_p_shield electron to shielded proton mag. mom. ratio -6.58227597e+02 7.20000000e-06 CODATA2022 eV electron volt 1.60217663e-12 erg 0.00000000e+00 CODATA2022 eV_amu electron volt-atomic mass unit relationship 1.78266192e-33 g 5.31372501e-43 CODATA2022 eV_hartree electron volt-hartree relationship 3.67493222e-02 E_h 7.10000000e-14 CODATA2022 eV_Hz electron volt-hertz relationship 2.41798924e+14 1 / s 0.00000000e+00 CODATA2022 eV_invm electron volt-inverse meter relationship 8.06554394e+03 1 / cm 0.00000000e+00 CODATA2022 eV_J electron volt-joule relationship 1.60217663e-12 erg 0.00000000e+00 CODATA2022 eV_K electron volt-kelvin relationship 1.16045181e+04 K 0.00000000e+00 CODATA2022 eV_kg electron volt-kilogram relationship 1.78266192e-33 g 0.00000000e+00 CODATA2022 e elementary charge 1.60217663e-19 C 0.00000000e+00 CODATA2022 e_h elementary charge over h 2.41798926e+14 A J^-1 1.50000000e+06 CODATA2022 F Faraday constant 9.64853321e+04 C mol^-1 0.00000000e+00 CODATA2022 F_conv Faraday constant for conventional electric current 9.64853251e+04 C_90 mol^-1 1.20000000e-03 CODATA2022 G_F Fermi coupling constant 4.54379566e+00 s4 / (g2 cm4) 2.33738613e-06 CODATA2022 alpha fine-structure constant 7.29735257e-03 1.10000000e-12 CODATA2022 c1 first radiation constant 3.74177185e-05 St erg 0.00000000e+00 CODATA2022 c1L first radiation constant for spectral radiance 1.19104297e-05 St erg / rad2 0.00000000e+00 CODATA2022 Eh_amu hartree-atomic mass unit relationship 4.85087021e-32 g 1.46127438e-41 CODATA2022 Eh_eV hartree-electron volt relationship 4.35974472e-11 erg 8.49153616e-23 CODATA2022 Eh Hartree energy 4.35974472e-11 erg 8.50000000e-23 CODATA2022 Eh_E_eV Hartree energy in eV 4.35974472e-11 erg 8.49153616e-23 CODATA2022 Eh_Hz hartree-hertz relationship 6.57968392e+15 1 / s 1.30000000e+04 CODATA2022 Eh_invm hartree-inverse meter relationship 2.19474631e+05 1 / cm 4.30000000e-07 CODATA2022 Eh_J hartree-joule relationship 4.35974472e-11 erg 8.50000000e-23 CODATA2022 Eh_K hartree-kelvin relationship 3.15775025e+05 K 6.10000000e-07 CODATA2022 Eh_kg hartree-kilogram relationship 4.85087021e-32 g 9.40000000e-44 CODATA2022 mH_e helion-electron mass ratio 5.49588528e+03 2.40000000e-07 CODATA2022 mH helion mass 5.00641278e-24 g 1.50000000e-33 CODATA2022 mH_E helion mass energy equivalent 4.49953941e-03 erg 1.40000000e-12 CODATA2022 mH_E_eV helion mass energy equivalent in MeV 4.49953941e-03 erg 1.36185014e-12 CODATA2022 mH_u helion mass in u 5.00641278e-24 g 1.61072289e-34 CODATA2022 MH helion molar mass 3.01493225e+00 g / mol 9.10000000e-10 CODATA2022 mH_p helion-proton mass ratio 2.99315267e+00 1.30000000e-10 CODATA2022 Hz_amu hertz-atomic mass unit relationship 7.37249732e-48 g 2.15870079e-57 CODATA2022 Hz_eV hertz-electron volt relationship 6.62607015e-27 erg 0.00000000e+00 CODATA2022 Hz_Eh hertz-hartree relationship 1.51982985e-16 E_h 2.90000000e-28 CODATA2022 Hz_invm hertz-inverse meter relationship 3.33564095e-11 1 / cm 0.00000000e+00 CODATA2022 Hz_J hertz-joule relationship 6.62607015e-27 erg 0.00000000e+00 CODATA2022 Hz_K hertz-kelvin relationship 4.79924307e-11 K 0.00000000e+00 CODATA2022 Hz_kg hertz-kilogram relationship 7.37249732e-48 g 0.00000000e+00 CODATA2022 invalpha inverse fine-structure constant 1.37035999e+02 2.10000000e-08 CODATA2022 invm_amu inverse meter-atomic mass unit relationship 2.21021909e-39 g 6.64215627e-49 CODATA2022 invm_eV inverse meter-electron volt relationship 1.98644586e-18 erg 0.00000000e+00 CODATA2022 invm_Eh inverse meter-hartree relationship 4.55633525e-08 E_h 8.80000000e-20 CODATA2022 invm_Hz inverse meter-hertz relationship 2.99792458e+08 1 / s 0.00000000e+00 CODATA2022 invm_J inverse meter-joule relationship 1.98644586e-18 erg 0.00000000e+00 CODATA2022 invm_K inverse meter-kelvin relationship 1.43877688e-02 K 0.00000000e+00 CODATA2022 invm_kg inverse meter-kilogram relationship 2.21021909e-39 g 0.00000000e+00 CODATA2022 invG0 inverse of conductance quantum 1.29064037e+04 ohm 0.00000000e+00 CODATA2022 K_J Josephson constant 4.83597848e+14 Hz V^-1 0.00000000e+00 CODATA2022 J_amu joule-atomic mass unit relationship 1.11265006e-14 g 3.32107813e-24 CODATA2022 J_eV joule-electron volt relationship 1.00000000e+07 erg 0.00000000e+00 CODATA2022 J_Eh joule-hartree relationship 2.29371228e+17 E_h 4.50000000e+05 CODATA2022 J_Hz joule-hertz relationship 1.50919018e+33 1 / s 0.00000000e+00 CODATA2022 J_invm joule-inverse meter relationship 5.03411657e+22 1 / cm 0.00000000e+00 CODATA2022 J_K joule-kelvin relationship 7.24297052e+22 K 0.00000000e+00 CODATA2022 J_kg joule-kilogram relationship 1.11265006e-14 g 0.00000000e+00 CODATA2022 K_amu kelvin-atomic mass unit relationship 1.53617919e-37 g 4.64950939e-47 CODATA2022 K_eV kelvin-electron volt relationship 1.38064900e-16 erg 0.00000000e+00 CODATA2022 K_Eh kelvin-hartree relationship 3.16681156e-06 E_h 6.10000000e-18 CODATA2022 K_Hz kelvin-hertz relationship 2.08366191e+10 1 / s 0.00000000e+00 CODATA2022 K_invm kelvin-inverse meter relationship 6.95034800e-01 1 / cm 0.00000000e+00 CODATA2022 K_J kelvin-joule relationship 1.38064900e-16 erg 0.00000000e+00 CODATA2022 K_kg kelvin-kilogram relationship 1.53617919e-37 g 0.00000000e+00 CODATA2022 kg_amu kilogram-atomic mass unit relationship 1.00000000e+03 g 2.98897032e-07 CODATA2022 kg_eV kilogram-electron volt relationship 8.98755179e+23 erg 0.00000000e+00 CODATA2022 kg_Eh kilogram-hartree relationship 2.06148579e+34 E_h 4.00000000e+22 CODATA2022 kg_Hz kilogram-hertz relationship 1.35639249e+50 1 / s 0.00000000e+00 CODATA2022 kg_invm kilogram-inverse meter relationship 4.52443833e+39 1 / cm 0.00000000e+00 CODATA2022 kg_J kilogram-joule relationship 8.98755179e+23 erg 0.00000000e+00 CODATA2022 kg_K kilogram-kelvin relationship 6.50965726e+39 K 0.00000000e+00 CODATA2022 aSi lattice parameter of silicon 5.43102051e-08 cm 8.90000000e-16 CODATA2022 n0 Loschmidt constant (273.15 K, 101.325 kPa) 2.68678011e+19 1 / cm3 0.00000000e+00 CODATA2022 mu0 mag. constant 1.25663706e-06 N A^-2 1.90000000e-16 CODATA2022 Phi0 mag. flux quantum 2.06783385e-15 Wb 0.00000000e+00 CODATA2022 R molar gas constant 8.31446262e+07 erg / (K mol) 0.00000000e+00 CODATA2022 Mu molar mass constant 1.00000000e+00 g / mol 3.00000000e-10 CODATA2022 MC12 molar mass of carbon-12 1.20000000e+01 g / mol 3.60000000e-09 CODATA2022 h_mol molar Planck constant 3.99031271e-03 St g / mol 0.00000000e+00 CODATA2022 ch_mol molar Planck constant times c 1.19626566e+08 cm erg / mol 5.40000000e-02 CODATA2022 v_mol_ideal_100kPa molar volume of ideal gas (273.15 K, 100 kPa) 2.27109546e+04 cm3 / mol 0.00000000e+00 CODATA2022 v_mol_ideal_101.325kPa molar volume of ideal gas (273.15 K, 101.325 kPa) 2.24139695e+04 cm3 / mol 0.00000000e+00 CODATA2022 vSI_mol molar volume of silicon 1.20588320e+01 cm3 / mol 6.00000000e-07 CODATA2022 xu Mo x unit 1.00209952e-11 cm 5.30000000e-18 CODATA2022 lambda_compt_mu muon Compton wavelength 1.17344411e-12 cm 2.60000000e-20 CODATA2022 lambda_compt_mu_2pi muon Compton wavelength over 2 pi 1.86759431e-13 cm 4.20000000e-21 CODATA2022 mMu_e muon-electron mass ratio 2.06768283e+02 4.60000000e-06 CODATA2022 g_mu muon g factor -2.00233184e+00 1.30000000e-09 CODATA2022 muMu muon mag. mom. -4.49044830e-26 J T^-1 1.00000000e-33 CODATA2022 muMu_anom muon mag. mom. anomaly 1.16592089e-03 6.30000000e-10 CODATA2022 muMu_Bhor muon mag. mom. to Bohr magneton ratio -4.84197047e-03 1.10000000e-10 CODATA2022 muMu_Nuc muon mag. mom. to nuclear magneton ratio -8.89059703e+00 2.00000000e-07 CODATA2022 mMu muon mass 1.88353163e-25 g 4.20000000e-33 CODATA2022 mMu_E muon mass energy equivalent 1.69283380e-04 erg 3.80000000e-12 CODATA2022 mMu_E_MeV muon mass energy equivalent in MeV 1.69283380e-04 erg 3.68500626e-12 CODATA2022 mMu_E_u muon mass in u 1.88353163e-25 g 4.15134767e-33 CODATA2022 MMu muon molar mass 1.13428926e-01 g / mol 2.50000000e-09 CODATA2022 mMu_n muon-neutron mass ratio 1.12454517e-01 2.50000000e-09 CODATA2022 muMu_p muon-proton mag. mom. ratio -3.18334514e+00 7.10000000e-08 CODATA2022 mMu_p muon-proton mass ratio 1.12609526e-01 2.50000000e-09 CODATA2022 mMu_tau muon-tau mass ratio 5.94635000e-02 4.00000000e-06 CODATA2022 1 natural unit of action 1.05457182e-27 erg s 0.00000000e+00 CODATA2022 1_eV_s natural unit of action in eV s 1.05457182e-27 erg s 0.00000000e+00 CODATA2022 E natural unit of energy 8.18710578e-07 erg 2.50000000e-16 CODATA2022 E_MeV natural unit of energy in MeV 8.18710578e-07 erg 2.40326495e-16 CODATA2022 L natural unit of length 3.86159268e-11 cm 1.20000000e-20 CODATA2022 M natural unit of mass 9.10938370e-28 g 2.80000000e-37 CODATA2022 p natural unit of momentum 2.73092449e-17 dyn s 3.40000000e-25 CODATA2022 p_MeV_c natural unit of momentum in MeV/c 5.10998946e-01 MeV/c 3.10000000e-09 CODATA2022 t natural unit of time 1.28808867e-21 s 3.90000000e-31 CODATA2022 v natural unit of velocity 2.99792458e+10 cm / s 0.00000000e+00 CODATA2022 lambda_compt_n neutron Compton wavelength 1.31959091e-13 cm 7.50000000e-23 CODATA2022 lambda_compt_n_2pi neutron Compton wavelength over 2 pi 2.10019415e-14 cm 1.40000000e-23 CODATA2022 muN_e neutron-electron mag. mom. ratio 1.04066882e-03 2.50000000e-10 CODATA2022 mN_e neutron-electron mass ratio 1.83868366e+03 8.90000000e-07 CODATA2022 g_n neutron g factor -3.82608545e+00 9.00000000e-07 CODATA2022 rg_n neutron gyromag. ratio 1.83247171e+08 s^-1 T^-1 4.30000000e+01 CODATA2022 rg_n_2pi neutron gyromag. ratio over 2 pi 2.91646933e+01 MHz T^-1 6.90000000e-06 CODATA2022 muN neutron mag. mom. -9.66236510e-27 J T^-1 2.30000000e-33 CODATA2022 muN_Bhor neutron mag. mom. to Bohr magneton ratio -1.04187563e-03 2.50000000e-10 CODATA2022 muN_Nuc neutron mag. mom. to nuclear magneton ratio -1.91304273e+00 4.50000000e-07 CODATA2022 mN neutron mass 1.67492750e-24 g 9.50000000e-34 CODATA2022 mN_E neutron mass energy equivalent 1.50534976e-03 erg 8.60000000e-13 CODATA2022 mN_E_MeV neutron mass energy equivalent in MeV 1.50534976e-03 erg 8.65175382e-13 CODATA2022 mN_u neutron mass in u 1.67492750e-24 g 8.13664143e-34 CODATA2022 MN neutron molar mass 1.00866492e+00 g / mol 5.70000000e-10 CODATA2022 mN_mu neutron-muon mass ratio 8.89248406e+00 2.00000000e-07 CODATA2022 muN_p neutron-proton mag. mom. ratio -6.84979340e-01 1.60000000e-07 CODATA2022 mN_p neutron-proton mass ratio 1.00137842e+00 4.90000000e-10 CODATA2022 mN_tau neutron-tau mass ratio 5.28779000e-01 3.60000000e-05 CODATA2022 muN_p_shield neutron to shielded proton mag. mom. ratio -6.84996940e-01 1.60000000e-07 CODATA2022 G Newtonian constant of gravitation 6.67430000e-08 cm3 / (g s2) 1.50000000e-12 CODATA2022 G_hbar_c Newtonian constant of gravitation over h-bar c 6.70883000e-39 (GeV/c^2)^-2 1.50000000e-43 CODATA2022 mu_N nuclear magneton 5.05078375e-27 J T^-1 1.50000000e-36 CODATA2022 mu_N_eV_T nuclear magneton in eV/T 3.15245126e-08 eV T^-1 9.60000000e-18 CODATA2022 mu_N_invm_T nuclear magneton in inverse meters per tesla 2.54262343e-02 m^-1 T^-1 1.60000000e-10 CODATA2022 mu_N_K_T nuclear magneton in K/T 3.65826778e-04 K T^-1 1.10000000e-13 CODATA2022 mu_N_MHz_T nuclear magneton in MHz/T 7.62259323e+00 MHz T^-1 2.30000000e-09 CODATA2022 h Planck constant 6.62607015e-27 erg s 0.00000000e+00 CODATA2022 h_eV_s Planck constant in eV s 6.62607009e-27 erg s 4.00544159e-35 CODATA2022 hbar Planck constant over 2 pi 1.05457180e-27 erg s 1.30000000e-35 CODATA2022 hbar_eV_s Planck constant over 2 pi in eV s 1.05457181e-27 erg s 6.40870654e-36 CODATA2022 chbar_MeV Planck constant over 2 pi times c in MeV fm 3.16152675e-17 cm erg 1.92261196e-25 CODATA2022 planck_length Planck length 1.61625500e-33 cm 1.80000000e-38 CODATA2022 planck_mass Planck mass 2.17643400e-05 g 2.40000000e-10 CODATA2022 planck_mass_E_GeV Planck mass energy equivalent in GeV 1.95608143e+16 erg 2.24304729e+11 CODATA2022 planck_temp Planck temperature 1.41678400e+32 K 1.60000000e+27 CODATA2022 plank_time Planck time 5.39124700e-44 s 6.00000000e-49 CODATA2022 qP_mP proton charge to mass quotient 9.57883316e+07 C kg^-1 2.90000000e-02 CODATA2022 lambda_compt_p proton Compton wavelength 1.32140986e-13 cm 4.00000000e-23 CODATA2022 lambda_compt_p_2pi proton Compton wavelength over 2 pi 2.10308910e-14 cm 9.70000000e-24 CODATA2022 mP_e proton-electron mass ratio 1.83615267e+03 1.10000000e-07 CODATA2022 g_p proton g factor 5.58569469e+00 1.60000000e-09 CODATA2022 rg_p proton gyromag. ratio 2.67522187e+08 s^-1 T^-1 1.10000000e-01 CODATA2022 rg_p_2pi proton gyromag. ratio over 2 pi 4.25774789e+01 MHz T^-1 2.90000000e-07 CODATA2022 muP proton mag. mom. 1.41060680e-26 J T^-1 6.00000000e-36 CODATA2022 muP_Bhor proton mag. mom. to Bohr magneton ratio 1.52103220e-03 4.60000000e-13 CODATA2022 muP_Nuc proton mag. mom. to nuclear magneton ratio 2.79284734e+00 8.20000000e-10 CODATA2022 muP_shield proton mag. shielding correction 2.56890000e-05 1.10000000e-08 CODATA2022 mP proton mass 1.67262192e-24 g 5.10000000e-34 CODATA2022 mP_E proton mass energy equivalent 1.50327762e-03 erg 4.60000000e-13 CODATA2022 mP_E_MeV proton mass energy equivalent in MeV 1.50327762e-03 erg 4.64631224e-13 CODATA2022 mP_u proton mass in u 1.67262192e-24 g 8.80085705e-35 CODATA2022 MP proton molar mass 1.00727647e+00 g / mol 3.10000000e-10 CODATA2022 mP_mu proton-muon mass ratio 8.88024337e+00 2.00000000e-07 CODATA2022 muP_n proton-neutron mag. mom. ratio -1.45989805e+00 3.40000000e-07 CODATA2022 mP_n proton-neutron mass ratio 9.98623478e-01 4.90000000e-10 CODATA2022 RrmsP proton rms charge radius 8.41400000e-14 cm 1.90000000e-16 CODATA2022 mP_tau proton-tau mass ratio 5.28051000e-01 3.60000000e-05 CODATA2022 kappa quantum of circulation 3.63694755e+00 cm2 / s 1.10000000e-09 CODATA2022 2kappa quantum of circulation times 2 7.27389510e+00 cm2 / s 2.20000000e-09 CODATA2022 Rinf Rydberg constant 1.09737316e+05 1 / cm 2.10000000e-07 CODATA2022 cRinf_Hz Rydberg constant times c in Hz 3.28984196e+15 1 / s 6.40000000e+03 CODATA2022 hcRinf_eV Rydberg constant times hc in eV 2.17987236e-11 erg 4.16565925e-23 CODATA2022 hcRinf_J Rydberg constant times hc in J 2.17987236e-11 erg 4.20000000e-23 CODATA2022 S0_R_100kPa Sackur-Tetrode constant (1 K, 100 kPa) -1.15170754e+00 4.50000000e-10 CODATA2022 S0_R_101.325kPa Sackur-Tetrode constant (1 K, 101.325 kPa) -1.16487052e+00 4.50000000e-10 CODATA2022 c2 second radiation constant 1.43877688e+00 K cm 0.00000000e+00 CODATA2022 rg_h_shield shielded helion gyromag. ratio 2.03789457e+08 s^-1 T^-1 2.40000000e+00 CODATA2022 rg_h_shield_2pi shielded helion gyromag. ratio over 2 pi 3.24340997e+01 MHz T^-1 4.30000000e-07 CODATA2022 muH_shield shielded helion mag. mom. -1.07455309e-26 J T^-1 1.30000000e-34 CODATA2022 muH_shield_Bhor shielded helion mag. mom. to Bohr magneton ratio -1.15867147e-03 1.40000000e-11 CODATA2022 muH_shield_Nuc shielded helion mag. mom. to nuclear magneton rati -2.12749772e+00 2.50000000e-08 CODATA2022 muH_shield_p shielded helion to proton mag. mom. ratio -7.61766562e-01 8.90000000e-09 CODATA2022 muH_shield_p_shield shielded helion to shielded proton mag. mom. ratio -7.61786131e-01 3.30000000e-09 CODATA2022 rg_p_shield shielded proton gyromag. ratio 2.67515315e+08 s^-1 T^-1 2.90000000e+00 CODATA2022 rg_p_shield_2pi shielded proton gyromag. ratio over 2 pi 4.25763851e+01 MHz T^-1 5.30000000e-07 CODATA2022 muP_shield shielded proton mag. mom. 1.41057056e-26 J T^-1 1.50000000e-34 CODATA2022 muP_shield_Bhor shielded proton mag. mom. to Bohr magneton ratio 1.52099313e-03 1.70000000e-11 CODATA2022 muP_shield_Nuc shielded proton mag. mom. to nuclear magneton rati 2.79277560e+00 3.00000000e-08 CODATA2022 c speed of light in vacuum 2.99792458e+10 cm / s 0.00000000e+00 CODATA2022 g standard acceleration of gravity 9.80665000e+02 cm / s2 0.00000000e+00 CODATA2022 atm standard atmosphere 1.01325000e+06 P / s 0.00000000e+00 CODATA2022 sigma Stefan-Boltzmann constant 5.67037442e-05 g / (s3 K4) 0.00000000e+00 CODATA2022 lambda_compt_tau tau Compton wavelength 6.97771000e-14 cm 4.70000000e-18 CODATA2022 lambda_compt_tau_2pi tau Compton wavelength over 2 pi 1.11056000e-14 cm 1.00000000e-18 CODATA2022 mTau_e tau-electron mass ratio 3.47723000e+03 2.30000000e-01 CODATA2022 mTau tau mass 3.16754000e-24 g 2.10000000e-28 CODATA2022 mTau_E tau mass energy equivalent 2.84684000e-03 erg 1.90000000e-07 CODATA2022 mTau_E_MeV tau mass energy equivalent in MeV 2.84677949e-03 erg 2.56348261e-07 CODATA2022 mTau_u tau mass in u 3.16754469e-24 g 2.15870079e-28 CODATA2022 MTau tau molar mass 1.90754000e+00 g / mol 1.30000000e-04 CODATA2022 mTau_mu tau-muon mass ratio 1.68170000e+01 1.10000000e-03 CODATA2022 mTau_n tau-neutron mass ratio 1.89115000e+00 1.30000000e-04 CODATA2022 mTau_p tau-proton mass ratio 1.89376000e+00 1.30000000e-04 CODATA2022 sigma_T Thomson cross section 6.65245873e-25 cm2 6.00000000e-34 CODATA2022 muPsi_e triton-electron mag. mom. ratio -1.62051442e-03 2.10000000e-11 CODATA2022 mPsi_e triton-electron mass ratio 5.49692154e+03 2.70000000e-07 CODATA2022 g_psi triton g factor 5.95792493e+00 1.20000000e-08 CODATA2022 muPsi triton mag. mom. 1.50460952e-26 J T^-1 3.00000000e-35 CODATA2022 muPsi_Bhor triton mag. mom. to Bohr magneton ratio 1.62239367e-03 3.20000000e-12 CODATA2022 muPsi_Nuc triton mag. mom. to nuclear magneton ratio 2.97896247e+00 5.90000000e-09 CODATA2022 mPsi triton mass 5.00735674e-24 g 1.50000000e-33 CODATA2022 mPsi_E triton mass energy equivalent 4.50038781e-03 erg 1.40000000e-12 CODATA2022 mPsi_E_MeV triton mass energy equivalent in MeV 4.50038781e-03 erg 1.36185014e-12 CODATA2022 mPsi_u triton mass in u 5.00735674e-24 g 1.99264688e-34 CODATA2022 MPsi triton molar mass 3.01550072e+00 g / mol 9.20000000e-10 CODATA2022 muPsi_n triton-neutron mag. mom. ratio -1.55718553e+00 3.70000000e-07 CODATA2022 muPsi_p triton-proton mag. mom. ratio 1.06663991e+00 1.00000000e-08 CODATA2022 mPsi_p triton-proton mass ratio 2.99371703e+00 1.50000000e-10 CODATA2022 u unified atomic mass unit 1.66053907e-24 g 5.00000000e-34 CODATA2022 R_K von Klitzing constant 2.58128075e+04 ohm 0.00000000e+00 CODATA2022 theta_W weak mixing angle 2.22900000e-01 3.00000000e-04 CODATA2022 b_freq Wien frequency displacement law constant 5.87892576e+10 1 / (K s) 0.00000000e+00 CODATA2022 b_lambda Wien wavelength displacement law constant 2.89777196e-01 K cm 0.00000000e+00 CODATA2022 auMom_um atomic unit of mom.um 1.99285188e-19 dyn s 2.40000000e-27 CODATA2022 mE_h electron-helion mass ratio 1.81954307e-04 7.90000000e-15 CODATA2022 mE_psi electron-triton mass ratio 1.81920006e-04 9.00000000e-15 CODATA2022 g_h helion g factor -4.25525061e+00 5.00000000e-08 CODATA2022 muH helion mag. mom. -1.07461753e-26 J T^-1 1.30000000e-34 CODATA2022 muH_Bhor helion mag. mom. to Bohr magneton ratio -1.15874096e-03 1.40000000e-11 CODATA2022 muH_Nuc helion mag. mom. to nuclear magneton ratio -2.12762531e+00 2.50000000e-08 CODATA2022 n0 Loschmidt constant (273.15 K, 100 kPa) 2.65164580e+19 1 / cm3 0.00000000e+00 CODATA2022 p_um natural unit of mom.um 2.73092449e-17 dyn s 3.40000000e-25 CODATA2022 p_um_MeV_c natural unit of mom.um in MeV/c 5.10998946e-01 MeV/c 3.10000000e-09 CODATA2022 mN-mP neutron-proton mass difference 2.30557435e-27 g 8.20000000e-34 CODATA2022 mN-mP_E neutron-proton mass difference energy equivalent 2.07214689e-06 erg 7.40000000e-13 CODATA2022 mN-mP_E_MeV neutron-proton mass difference energy equivalent i 2.07214689e-06 erg 7.37001252e-13 CODATA2022 mN-mP_u neutron-proton mass difference in u 2.30557435e-27 g 8.13664143e-34 CODATA2022 stp standard-state pressure 1.00000000e+06 P / s 0.00000000e+00 CODATA2022 mAlpha alpha particle relative atomic mass 4.00150618e+00 6.30000000e-11 CODATA2022 muB_invm_T Bohr magneton in inverse meter per tesla 4.66864478e+01 m^-1 T^-1 1.40000000e-08 CODATA2022 kB_invm Boltzmann constant in inverse meter per kelvin 6.95034800e-01 1 / (K cm) 0.00000000e+00 CODATA2022 ampere-90 conventional value of ampere-90 1.00000009e+00 A 0.00000000e+00 CODATA2022 coulomb-90 conventional value of coulomb-90 1.00000009e+00 C 0.00000000e+00 CODATA2022 farad-90 conventional value of farad-90 9.99999982e-01 F 0.00000000e+00 CODATA2022 henry-90 conventional value of henry-90 1.00000002e+00 H 0.00000000e+00 CODATA2022 ohm-90 conventional value of ohm-90 1.00000002e+00 ohm 0.00000000e+00 CODATA2022 volt-90 conventional value of volt-90 1.00000011e+00 V 0.00000000e+00 CODATA2022 watt-90 conventional value of watt-90 1.00000020e+07 erg / s 0.00000000e+00 CODATA2022 mD_amu_rel deuteron relative atomic mass 2.01355321e+00 4.00000000e-11 CODATA2022 rg_e_MHz_T electron gyromag. ratio in MHz/T 2.80249514e+04 MHz T^-1 8.50000000e-06 CODATA2022 mE_amu_rel electron relative atomic mass 5.48579909e-04 1.60000000e-14 CODATA2022 e_hbar elementary charge over h-bar 1.51926745e+15 A J^-1 0.00000000e+00 CODATA2022 mH_amu_rel helion relative atomic mass 3.01493225e+00 9.70000000e-11 CODATA2022 h_shield_shift helion shielding shift 5.99674300e-05 1.00000000e-10 CODATA2022 F_hyperfine_Cs-133 hyperfine transition frequency of Cs-133 9.19263177e+09 1 / s 0.00000000e+00 CODATA2022 aSi_220_ideal lattice spacing of ideal Si (220) 1.92015572e-08 cm 3.20000000e-16 CODATA2022 eta luminous efficacy 6.83000000e-05 s3 rad2 cd/(g cm2) 0.00000000e+00 CODATA2022 rg_n_MHz_T neutron gyromag. ratio in MHz/T 2.91646931e+01 MHz T^-1 6.90000000e-06 CODATA2022 mN_amu_rel neutron relative atomic mass 1.00866492e+00 4.90000000e-10 CODATA2022 mu_N_invm nuclear magneton in inverse meter per tesla 2.54262341e-02 m^-1 T^-1 7.80000000e-12 CODATA2022 h_eV_Hz Planck constant in eV/Hz 6.62607015e-27 erg s 0.00000000e+00 CODATA2022 rg_p_MHz_T proton gyromag. ratio in MHz/T 4.25774785e+01 MHz T^-1 1.80000000e-08 CODATA2022 mP_amu_rel proton relative atomic mass 1.00727647e+00 5.30000000e-11 CODATA2022 lambda_compt_bar reduced Compton wavelength 3.86159268e-11 cm 1.20000000e-20 CODATA2022 lambda_compt_mu_bar reduced muon Compton wavelength 1.86759431e-13 cm 4.20000000e-21 CODATA2022 lambda_compt_n_bar reduced neutron Compton wavelength 2.10019416e-14 cm 1.20000000e-23 CODATA2022 hbar reduced Planck constant 1.05457182e-27 erg s 0.00000000e+00 CODATA2022 hbar_eV_s reduced Planck constant in eV s 1.05457182e-27 erg s 0.00000000e+00 CODATA2022 chbar_MeV reduced Planck constant times c in MeV fm 3.16152677e-17 cm erg 0.00000000e+00 CODATA2022 lambda_compt_p_bar reduced proton Compton wavelength 2.10308910e-14 cm 6.40000000e-24 CODATA2022 lambda_compt_tau_bar reduced tau Compton wavelength 1.11053800e-14 cm 7.50000000e-19 CODATA2022 rg_h_shield_MHz_T shielded helion gyromag. ratio in MHz/T 3.24340994e+01 MHz T^-1 3.80000000e-07 CODATA2022 rg_p_shield_MHz_T shielded proton gyromag. ratio in MHz/T 4.25763847e+01 MHz T^-1 4.60000000e-07 CODATA2022 d_shield-p_shield_HD shielding difference of d and p in HD 2.02000000e-08 2.00000000e-11 CODATA2022 t_shield-p_shield_HT shielding difference of t and p in HT 2.41400000e-08 2.00000000e-11 CODATA2022 tau_E tau energy equivalent 2.84684357e-03 erg 1.92261196e-07 CODATA2022 psi_amu_rel triton relative atomic mass 3.01550072e+00 1.20000000e-10 CODATA2022 muPsi_p triton to proton mag. mom. ratio 1.06663992e+00 2.10000000e-09 CODATA2022 epsilon0 vacuum electric permittivity 8.85418781e-12 F m^-1 1.30000000e-21 CODATA2022 mu0 vacuum mag. permeability 1.25663706e-06 N A^-2 1.90000000e-16 CODATA2022 mWZ W to Z mass ratio 8.81530000e-01 1.70000000e-04 CODATA2022 au Astronomical Unit 1.49597871e+13 cm 0.00000000e+00 IAU 2012 Resolution B2 pc Parsec 3.08567758e+18 cm 0.00000000e+00 Derived from au + IAU 2015 Resolution B 2 note [4] kpc Kiloparsec 3.08567758e+21 cm 0.00000000e+00 Derived from au + IAU 2015 Resolution B 2 note [4] L_bol0 Luminosity for absolute bolometric magnitude 0 3.01280000e+35 erg / s 0.00000000e+00 IAU 2015 Resolution B 2 L_sun Nominal solar luminosity 3.82800000e+33 erg / s 0.00000000e+00 IAU 2015 Resolution B 3 GM_sun Nominal solar mass parameter 1.32712440e+26 cm3 / s2 0.00000000e+00 IAU 2015 Resolution B 3 M_sun Solar mass 1.98840987e+33 g 4.46880543e+28 IAU 2015 Resolution B 3 + CODATA 2018 R_sun Nominal solar radius 6.95700000e+10 cm 0.00000000e+00 IAU 2015 Resolution B 3 GM_jup Nominal Jupiter mass parameter 1.26686530e+23 cm3 / s2 0.00000000e+00 IAU 2015 Resolution B 3 M_jup Jupiter mass 1.89812460e+30 g 4.26589589e+25 IAU 2015 Resolution B 3 + CODATA 2018 R_jup Nominal Jupiter equatorial radius 7.14920000e+09 cm 0.00000000e+00 IAU 2015 Resolution B 3 GM_earth Nominal Earth mass parameter 3.98600400e+20 cm3 / s2 0.00000000e+00 IAU 2015 Resolution B 3 M_earth Earth mass 5.97216787e+27 g 1.34220095e+23 IAU 2015 Resolution B 3 + CODATA 2018 R_earth Nominal Earth equatorial radius 6.37810000e+08 cm 0.00000000e+00 IAU 2015 Resolution B 3