| alpha particle mass |
6.64465723e-27 kg |
| alpha particle mass energy equivalent |
5.971920097e-10 J |
| alpha particle mass energy equivalent in MeV |
3727.379378 MeV |
| alpha particle mass in u |
4.00150617913 u |
| alpha particle molar mass |
0.00400150617913 kg mol^-1 |
| alpha particle-electron mass ratio |
7294.29954136 |
| alpha particle-proton mass ratio |
3.97259968907 |
| Angstrom star |
1.00001495e-10 m |
| atomic mass constant |
1.66053904e-27 kg |
| atomic mass constant energy equivalent |
1.492418062e-10 J |
| atomic mass constant energy equivalent in MeV |
931.4940954 MeV |
| atomic mass unit-electron volt relationship |
931494095.4 eV |
| atomic mass unit-hartree relationship |
34231776.902 E_h |
| atomic mass unit-hertz relationship |
2.2523427206e+23 Hz |
| atomic mass unit-inverse meter relationship |
7.5130066166e+14 m^-1 |
| atomic mass unit-joule relationship |
1.492418062e-10 J |
| atomic mass unit-kelvin relationship |
1.08095438e+13 K |
| atomic mass unit-kilogram relationship |
1.66053904e-27 kg |
| atomic unit of 1st hyperpolarizability |
3.206361329e-53 C^3 m^3 J^-2 |
| atomic unit of 2nd hyperpolarizability |
6.235380085e-65 C^4 m^4 J^-3 |
| atomic unit of action |
1.0545718e-34 J s |
| atomic unit of charge |
1.6021766208e-19 C |
| atomic unit of charge density |
1.081202377e+12 C m^-3 |
| atomic unit of current |
0.006623618183 A |
| atomic unit of electric dipole mom. |
8.478353552e-30 C m |
| atomic unit of electric field |
5.142206707e+11 V m^-1 |
| atomic unit of electric field gradient |
9.717362356e+21 V m^-2 |
| atomic unit of electric polarizability |
1.6487772731e-41 C^2 m^2 J^-1 |
| atomic unit of electric potential |
27.21138602 V |
| atomic unit of electric quadrupole mom. |
4.486551484e-40 C m^2 |
| atomic unit of energy |
4.35974465e-18 J |
| atomic unit of force |
8.23872336e-08 N |
| atomic unit of length |
5.2917721067e-11 m |
| atomic unit of mag. dipole mom. |
1.854801999e-23 J T^-1 |
| atomic unit of mag. flux density |
235051.755 T |
| atomic unit of magnetizability |
7.8910365886e-29 J T^-2 |
| atomic unit of mass |
9.10938356e-31 kg |
| atomic unit of mom.um |
1.992851882e-24 kg m s^-1 |
| atomic unit of permittivity |
1.11265005605e-10 F m^-1 |
| atomic unit of time |
2.41888432651e-17 s |
| atomic unit of velocity |
2187691.26277 m s^-1 |
| Avogadro constant |
6.022140857e+23 mol^-1 |
| Bohr magneton |
9.274009994e-24 J T^-1 |
| Bohr magneton in eV/T |
5.7883818012e-05 eV T^-1 |
| Bohr magneton in Hz/T |
13996245042.0 Hz T^-1 |
| Bohr magneton in inverse meters per tesla |
46.68644814 m^-1 T^-1 |
| Bohr magneton in K/T |
0.67171405 K T^-1 |
| Bohr radius |
5.2917721067e-11 m |
| Boltzmann constant |
1.38064852e-23 J K^-1 |
| Boltzmann constant in eV/K |
8.6173303e-05 eV K^-1 |
| Boltzmann constant in Hz/K |
20836612000.0 Hz K^-1 |
| Boltzmann constant in inverse meters per kelvin |
69.503457 m^-1 K^-1 |
| characteristic impedance of vacuum |
376.730313462 ohm |
| classical electron radius |
2.8179403227e-15 m |
| Compton wavelength |
2.4263102367e-12 m |
| Compton wavelength over 2 pi |
3.8615926764e-13 m |
| conductance quantum |
7.748091731e-05 S |
| conventional value of Josephson constant |
4.835979e+14 Hz V^-1 |
| conventional value of von Klitzing constant |
25812.807 ohm |
| Cu x unit |
1.00207697e-13 m |
| deuteron g factor |
0.8574382311 |
| deuteron mag. mom. |
4.33073504e-27 J T^-1 |
| deuteron mag. mom. to Bohr magneton ratio |
0.0004669754554 |
| deuteron mag. mom. to nuclear magneton ratio |
0.8574382311 |
| deuteron mass |
3.343583719e-27 kg |
| deuteron mass energy equivalent |
3.005063183e-10 J |
| deuteron mass energy equivalent in MeV |
1875.612928 MeV |
| deuteron mass in u |
2.01355321275 u |
| deuteron molar mass |
0.00201355321274 kg mol^-1 |
| deuteron rms charge radius |
2.1413e-15 m |
| deuteron-electron mag. mom. ratio |
-0.0004664345535 |
| deuteron-electron mass ratio |
3670.48296785 |
| deuteron-neutron mag. mom. ratio |
-0.44820652 |
| deuteron-proton mag. mom. ratio |
0.3070122077 |
| deuteron-proton mass ratio |
1.99900750087 |
| electric constant |
8.85418781762e-12 F m^-1 |
| electron charge to mass quotient |
-1.758820024e+11 C kg^-1 |
| electron g factor |
-2.00231930436 |
| electron gyromag. ratio |
1.760859644e+11 s^-1 T^-1 |
| electron gyromag. ratio over 2 pi |
28024.95164 MHz T^-1 |
| electron mag. mom. |
-9.28476462e-24 J T^-1 |
| electron mag. mom. anomaly |
0.00115965218091 |
| electron mag. mom. to Bohr magneton ratio |
-1.00115965218 |
| electron mag. mom. to nuclear magneton ratio |
-1838.28197234 |
| electron mass |
9.10938356e-31 kg |
| electron mass energy equivalent |
8.18710565e-14 J |
| electron mass energy equivalent in MeV |
0.5109989461 MeV |
| electron mass in u |
0.00054857990907 u |
| electron molar mass |
5.4857990907e-07 kg mol^-1 |
| electron to alpha particle mass ratio |
0.00013709335548 |
| electron to shielded helion mag. mom. ratio |
864.058257 |
| electron to shielded proton mag. mom. ratio |
-658.2275971 |
| electron volt |
1.6021766208e-19 J |
| electron volt-atomic mass unit relationship |
1.0735441105e-09 u |
| electron volt-hartree relationship |
0.03674932248 E_h |
| electron volt-hertz relationship |
2.417989262e+14 Hz |
| electron volt-inverse meter relationship |
806554.4005 m^-1 |
| electron volt-joule relationship |
1.6021766208e-19 J |
| electron volt-kelvin relationship |
11604.5221 K |
| electron volt-kilogram relationship |
1.782661907e-36 kg |
| electron-deuteron mag. mom. ratio |
-2143.923499 |
| electron-deuteron mass ratio |
0.000272443710748 |
| electron-helion mass ratio |
0.000181954307485 |
| electron-muon mag. mom. ratio |
206.766988 |
| electron-muon mass ratio |
0.0048363317 |
| electron-neutron mag. mom. ratio |
960.9205 |
| electron-neutron mass ratio |
0.00054386734428 |
| electron-proton mag. mom. ratio |
-658.2106866 |
| electron-proton mass ratio |
0.000544617021352 |
| electron-tau mass ratio |
0.000287592 |
| electron-triton mass ratio |
0.00018192000622 |
| elementary charge |
1.6021766208e-19 C |
| elementary charge over h |
2.417989262e+14 A J^-1 |
| Faraday constant |
96485.33289 C mol^-1 |
| Faraday constant for conventional electric current |
96485.3251 C_90 mol^-1 |
| Fermi coupling constant |
1.1663787e-05 GeV^-2 |
| fine-structure constant |
0.0072973525664 |
| first radiation constant |
3.74177179e-16 W m^2 |
| first radiation constant for spectral radiance |
1.191042953e-16 W m^2 sr^-1 |
| Hartree energy |
4.35974465e-18 J |
| Hartree energy in eV |
27.21138602 eV |
| hartree-atomic mass unit relationship |
2.9212623197e-08 u |
| hartree-electron volt relationship |
27.21138602 eV |
| hartree-hertz relationship |
6.57968392071e+15 Hz |
| hartree-inverse meter relationship |
21947463.137 m^-1 |
| hartree-joule relationship |
4.35974465e-18 J |
| hartree-kelvin relationship |
315775.13 K |
| hartree-kilogram relationship |
4.850870129e-35 kg |
| helion g factor |
-4.255250616 |
| helion mag. mom. |
-1.074617522e-26 J T^-1 |
| helion mag. mom. to Bohr magneton ratio |
-0.001158740958 |
| helion mag. mom. to nuclear magneton ratio |
-2.127625308 |
| helion mass |
5.0064127e-27 kg |
| helion mass energy equivalent |
4.499539341e-10 J |
| helion mass energy equivalent in MeV |
2808.391586 MeV |
| helion mass in u |
3.01493224673 u |
| helion molar mass |
0.00301493224673 kg mol^-1 |
| helion-electron mass ratio |
5495.88527922 |
| helion-proton mass ratio |
2.99315267046 |
| hertz-atomic mass unit relationship |
4.4398216616e-24 u |
| hertz-electron volt relationship |
4.135667662e-15 eV |
| hertz-hartree relationship |
1.51982984601e-16 E_h |
| hertz-inverse meter relationship |
3.33564095198e-09 m^-1 |
| hertz-joule relationship |
6.62607004e-34 J |
| hertz-kelvin relationship |
4.7992447e-11 K |
| hertz-kilogram relationship |
7.372497201e-51 kg |
| inverse fine-structure constant |
137.035999139 |
| inverse meter-atomic mass unit relationship |
1.331025049e-15 u |
| inverse meter-electron volt relationship |
1.2398419739e-06 eV |
| inverse meter-hartree relationship |
4.55633525277e-08 E_h |
| inverse meter-hertz relationship |
299792458.0 Hz |
| inverse meter-joule relationship |
1.986445824e-25 J |
| inverse meter-kelvin relationship |
0.0143877736 K |
| inverse meter-kilogram relationship |
2.210219057e-42 kg |
| inverse of conductance quantum |
12906.4037278 ohm |
| Josephson constant |
4.835978525e+14 Hz V^-1 |
| joule-atomic mass unit relationship |
6700535363.0 u |
| joule-electron volt relationship |
6.241509126e+18 eV |
| joule-hartree relationship |
2.293712317e+17 E_h |
| joule-hertz relationship |
1.509190205e+33 Hz |
| joule-inverse meter relationship |
5.034116651e+24 m^-1 |
| joule-kelvin relationship |
7.2429731e+22 K |
| joule-kilogram relationship |
1.11265005605e-17 kg |
| kelvin-atomic mass unit relationship |
9.2510842e-14 u |
| kelvin-electron volt relationship |
8.6173303e-05 eV |
| kelvin-hartree relationship |
3.1668105e-06 E_h |
| kelvin-hertz relationship |
20836612000.0 Hz |
| kelvin-inverse meter relationship |
69.503457 m^-1 |
| kelvin-joule relationship |
1.38064852e-23 J |
| kelvin-kilogram relationship |
1.53617865e-40 kg |
| kilogram-atomic mass unit relationship |
6.022140857e+26 u |
| kilogram-electron volt relationship |
5.60958865e+35 eV |
| kilogram-hartree relationship |
2.061485823e+34 E_h |
| kilogram-hertz relationship |
1.356392512e+50 Hz |
| kilogram-inverse meter relationship |
4.524438411e+41 m^-1 |
| kilogram-joule relationship |
8.98755178737e+16 J |
| kilogram-kelvin relationship |
6.5096595e+39 K |
| lattice parameter of silicon |
5.431020504e-10 m |
| Loschmidt constant (273.15 K, 100 kPa) |
2.6516467e+25 m^-3 |
| Loschmidt constant (273.15 K, 101.325 kPa) |
2.6867811e+25 m^-3 |
| mag. constant |
1.25663706144e-06 N A^-2 |
| mag. flux quantum |
2.067833831e-15 Wb |
| Mo x unit |
1.00209952e-13 m |
| molar gas constant |
8.3144598 J mol^-1 K^-1 |
| molar mass constant |
0.001 kg mol^-1 |
| molar mass of carbon-12 |
0.012 kg mol^-1 |
| molar Planck constant |
3.990312711e-10 J s mol^-1 |
| molar Planck constant times c |
0.119626565582 J m mol^-1 |
| molar volume of ideal gas (273.15 K, 100 kPa) |
0.022710947 m^3 mol^-1 |
| molar volume of ideal gas (273.15 K, 101.325 kPa) |
0.022413962 m^3 mol^-1 |
| molar volume of silicon |
1.205883214e-05 m^3 mol^-1 |
| muon Compton wavelength |
1.173444111e-14 m |
| muon Compton wavelength over 2 pi |
1.867594308e-15 m |
| muon g factor |
-2.0023318418 |
| muon mag. mom. |
-4.49044826e-26 J T^-1 |
| muon mag. mom. anomaly |
0.00116592089 |
| muon mag. mom. to Bohr magneton ratio |
-0.00484197048 |
| muon mag. mom. to nuclear magneton ratio |
-8.89059705 |
| muon mass |
1.883531594e-28 kg |
| muon mass energy equivalent |
1.692833774e-11 J |
| muon mass energy equivalent in MeV |
105.6583745 MeV |
| muon mass in u |
0.1134289257 u |
| muon molar mass |
0.0001134289257 kg mol^-1 |
| muon-electron mass ratio |
206.7682826 |
| muon-neutron mass ratio |
0.1124545167 |
| muon-proton mag. mom. ratio |
-3.183345142 |
| muon-proton mass ratio |
0.1126095262 |
| muon-tau mass ratio |
0.0594649 |
| natural unit of action |
1.0545718e-34 J s |
| natural unit of action in eV s |
6.582119514e-16 eV s |
| natural unit of energy |
8.18710565e-14 J |
| natural unit of energy in MeV |
0.5109989461 MeV |
| natural unit of length |
3.8615926764e-13 m |
| natural unit of mass |
9.10938356e-31 kg |
| natural unit of mom.um |
2.730924488e-22 kg m s^-1 |
| natural unit of mom.um in MeV/c |
0.5109989461 MeV/c |
| natural unit of time |
1.28808866712e-21 s |
| natural unit of velocity |
299792458.0 m s^-1 |
| neutron Compton wavelength |
1.31959090481e-15 m |
| neutron Compton wavelength over 2 pi |
2.1001941536e-16 m |
| neutron g factor |
-3.82608545 |
| neutron gyromag. ratio |
183247172.0 s^-1 T^-1 |
| neutron gyromag. ratio over 2 pi |
29.1646933 MHz T^-1 |
| neutron mag. mom. |
-9.662365e-27 J T^-1 |
| neutron mag. mom. to Bohr magneton ratio |
-0.00104187563 |
| neutron mag. mom. to nuclear magneton ratio |
-1.91304273 |
| neutron mass |
1.674927471e-27 kg |
| neutron mass energy equivalent |
1.505349739e-10 J |
| neutron mass energy equivalent in MeV |
939.5654133 MeV |
| neutron mass in u |
1.00866491588 u |
| neutron molar mass |
0.00100866491588 kg mol^-1 |
| neutron to shielded proton mag. mom. ratio |
-0.68499694 |
| neutron-electron mag. mom. ratio |
0.00104066882 |
| neutron-electron mass ratio |
1838.68366158 |
| neutron-muon mass ratio |
8.89248408 |
| neutron-proton mag. mom. ratio |
-0.68497934 |
| neutron-proton mass difference |
2.30557377e-30 |
| neutron-proton mass difference energy equivalent |
2.07214637e-13 |
| neutron-proton mass difference energy equivalent in MeV |
1.29333205 |
| neutron-proton mass difference in u |
0.001388449 |
| neutron-proton mass ratio |
1.00137841898 |
| neutron-tau mass ratio |
0.52879 |
| Newtonian constant of gravitation |
6.67408e-11 m^3 kg^-1 s^-2 |
| Newtonian constant of gravitation over h-bar c |
6.70861e-39 (GeV/c^2)^-2 |
| nuclear magneton |
5.050783699e-27 J T^-1 |
| nuclear magneton in eV/T |
3.152451255e-08 eV T^-1 |
| nuclear magneton in inverse meters per tesla |
0.02542623432 m^-1 T^-1 |
| nuclear magneton in K/T |
0.0003658269 K T^-1 |
| nuclear magneton in MHz/T |
7.622593285 MHz T^-1 |
| Planck constant |
6.62607004e-34 J s |
| Planck constant in eV s |
4.135667662e-15 eV s |
| Planck constant over 2 pi |
1.0545718e-34 J s |
| Planck constant over 2 pi in eV s |
6.582119514e-16 eV s |
| Planck constant over 2 pi times c in MeV fm |
197.3269788 MeV fm |
| Planck length |
1.616229e-35 m |
| Planck mass |
2.17647e-08 kg |
| Planck mass energy equivalent in GeV |
1.22091e+19 GeV |
| Planck temperature |
1.416808e+32 K |
| Planck time |
5.39116e-44 s |
| proton charge to mass quotient |
95788332.26 C kg^-1 |
| proton Compton wavelength |
1.32140985396e-15 m |
| proton Compton wavelength over 2 pi |
2.10308910109e-16 m |
| proton g factor |
5.585694702 |
| proton gyromag. ratio |
267522190.0 s^-1 T^-1 |
| proton gyromag. ratio over 2 pi |
42.57747892 MHz T^-1 |
| proton mag. mom. |
1.4106067873e-26 J T^-1 |
| proton mag. mom. to Bohr magneton ratio |
0.0015210322053 |
| proton mag. mom. to nuclear magneton ratio |
2.7928473508 |
| proton mag. shielding correction |
2.5691e-05 |
| proton mass |
1.672621898e-27 kg |
| proton mass energy equivalent |
1.503277593e-10 J |
| proton mass energy equivalent in MeV |
938.2720813 MeV |
| proton mass in u |
1.00727646688 u |
| proton molar mass |
0.00100727646688 kg mol^-1 |
| proton rms charge radius |
8.751e-16 m |
| proton-electron mass ratio |
1836.15267389 |
| proton-muon mass ratio |
8.88024338 |
| proton-neutron mag. mom. ratio |
-1.45989805 |
| proton-neutron mass ratio |
0.99862347844 |
| proton-tau mass ratio |
0.528063 |
| quantum of circulation |
0.00036369475486 m^2 s^-1 |
| quantum of circulation times 2 |
0.00072738950972 m^2 s^-1 |
| Rydberg constant |
10973731.5685 m^-1 |
| Rydberg constant times c in Hz |
3.28984196036e+15 Hz |
| Rydberg constant times hc in eV |
13.605693009 eV |
| Rydberg constant times hc in J |
2.179872325e-18 J |
| Sackur-Tetrode constant (1 K, 100 kPa) |
-1.1517084 |
| Sackur-Tetrode constant (1 K, 101.325 kPa) |
-1.1648714 |
| second radiation constant |
0.0143877736 m K |
| shielded helion gyromag. ratio |
203789458.5 s^-1 T^-1 |
| shielded helion gyromag. ratio over 2 pi |
32.43409966 MHz T^-1 |
| shielded helion mag. mom. |
-1.07455308e-26 J T^-1 |
| shielded helion mag. mom. to Bohr magneton ratio |
-0.001158671471 |
| shielded helion mag. mom. to nuclear magneton ratio |
-2.12749772 |
| shielded helion to proton mag. mom. ratio |
-0.7617665603 |
| shielded helion to shielded proton mag. mom. ratio |
-0.7617861313 |
| shielded proton gyromag. ratio |
267515317.1 s^-1 T^-1 |
| shielded proton gyromag. ratio over 2 pi |
42.57638507 MHz T^-1 |
| shielded proton mag. mom. |
1.410570547e-26 J T^-1 |
| shielded proton mag. mom. to Bohr magneton ratio |
0.001520993128 |
| shielded proton mag. mom. to nuclear magneton ratio |
2.7927756 |
| speed of light in vacuum |
299792458.0 m s^-1 |
| standard acceleration of gravity |
9.80665 m s^-2 |
| standard atmosphere |
101325.0 Pa |
| standard-state pressure |
100000.0 Pa |
| Stefan-Boltzmann constant |
5.670367e-08 W m^-2 K^-4 |
| tau Compton wavelength |
6.97787e-16 m |
| tau Compton wavelength over 2 pi |
1.11056e-16 m |
| tau mass |
3.16747e-27 kg |
| tau mass energy equivalent |
2.84678e-10 J |
| tau mass energy equivalent in MeV |
1776.82 MeV |
| tau mass in u |
1.90749 u |
| tau molar mass |
0.00190749 kg mol^-1 |
| tau-electron mass ratio |
3477.15 |
| tau-muon mass ratio |
16.8167 |
| tau-neutron mass ratio |
1.89111 |
| tau-proton mass ratio |
1.89372 |
| Thomson cross section |
6.6524587158e-29 m^2 |
| triton g factor |
5.95792492 |
| triton mag. mom. |
1.504609503e-26 J T^-1 |
| triton mag. mom. to Bohr magneton ratio |
0.0016223936616 |
| triton mag. mom. to nuclear magneton ratio |
2.97896246 |
| triton mass |
5.007356665e-27 kg |
| triton mass energy equivalent |
4.500387735e-10 J |
| triton mass energy equivalent in MeV |
2808.921112 MeV |
| triton mass in u |
3.01550071632 u |
| triton molar mass |
0.00301550071632 kg mol^-1 |
| triton-electron mass ratio |
5496.92153588 |
| triton-proton mass ratio |
2.99371703348 |
| unified atomic mass unit |
1.66053904e-27 kg |
| von Klitzing constant |
25812.8074555 ohm |
| weak mixing angle |
0.2223 |
| Wien frequency displacement law constant |
58789238000.0 Hz K^-1 |
| Wien wavelength displacement law constant |
0.0028977729 m K |
| {220} lattice spacing of silicon |
1.920155714e-10 m |
