universal electromagnetic atomic and nuclear physico-chemical
universal constants |
|
| c | speed of light in vacuum m·s−1 |
| G | Newtonian constant of gravitation m3 ·kg-1·s-2 |
| h | Planck constant J·s |
| ℏ | reduced Planck constant J·s |
electromagnetic constants |
|
| μ0 | magnetic constant (vacuum permeability) N·A−2 |
| ε0 | electric constant (vacuum permittivity) F·m−1 |
| Z0 | characteristic impedance of vacuum Ω |
| ke | Coulomb's constant N·m2·C-2 |
| e | elementary charge C |
| μB | Bohr magneton J·T-1 |
| G0 | conductance quantum S |
| G0-1 | inverse conductance quantum Ω |
| KJ | Josephson constant Hz·V-1 |
| Φ0 | magnetic flux quantum Wb |
| μN | nuclear magneton J·T-1 |
| RK | von Klitzing constant Ω |
atomic and nuclear constants |
|
| a0 | Bohr radius m |
| re | classical electron radius m |
| me | electron mass kg |
| GF/(ℏc)3 | Fermi coupling constant GeV-2 |
| α | fine-structure constant |
| Eh | Hartree energy J |
| mp | proton mass kg |
| h/2me | quantum of circulation m2 s-1 |
| R∞ | Rydberg constant m-1 |
| (8π / 3)re2 | Thomson cross section m2 |
| sin2θw | weak mixing angle |
physico-chemical constants |
|
| mu | Atomic mass constant kg |
| NA,L | Avogadro's number mol−1 |
| k | Boltzmann constant J·K−1 |
| F | Faraday constant C·mol-1 |
| c1 | first radiation constant W·m2 |
| c1L | first radiation constant (for spectral radiance) W·m2 sr-1 |
| n0 | Loschmidt constant m-3 at T = 273.15 K and p = 101.325 kPa |
| R | gas constant J·K−1·mol−1 |
| NAh | molar Planck constant J·s·mol-1 |
| Vm | molar volume of an ideal gas m3·mol−1 at T = 273.15 K and p = 100 kPa |
| Vm | molar volume of an ideal gas m3·mol−1 at T = 273.15 K and p = 101.325 kPa |
| S0/R | Sackur-Tetrode constant at T = 1 K and p = 100 kPa |
| S0/R | Sackur-Tetrode constant at T = 1 K and p = 101.325 kPa |
| c2 | second radiation constant m·K |
| σ | Stefan–Boltzmann constant W·m-2·K−4 |
| b | Wien displacement law constant m·K |