Constants
Physics / constants.yaml 18 records
1 section
constants 18
constants
| Name | Symbol | Value | Uncertainty | Unit | Unit Symbol |
|---|---|---|---|---|---|
| Speed of Light in Vacuum | c | 2.9979e+8 | 0 | Meters per second | m/s |
| Planck Constant | h | 6.6261e-34 | 0 | Joule second | J·s |
| Reduced Planck Constant | hbar | 1.0546e-34 | 0 | Joule second | J·s |
| Elementary Charge | e | 1.6022e-19 | 0 | Coulomb | C |
| Avogadro Constant | NA | 6.0221e+23 | 0 | Inverse Mole | mol^-1 |
| Boltzmann Constant | k | 1.3806e-23 | 0 | Joules per Kelvin | J/K |
| Gas Constant | R | 8.314463 | 0 | Joules per Kelvin | J/K |
| Electron Mass | m_e | 9.1094e-31 | 1.1000e-40 | Kilogram | kg |
| Proton Mass | m_p | 1.6726e-27 | 0 | Kilogram | kg |
| Vacuum Permittivity | epsilon_0 | 8.8542e-12 | 1.3000e-21 | — | — |
| Newtonian Constant of Gravitation | G | 6.6743e-11 | 1.5000e-15 | Gravitational Constant Unit | m^3·kg^-1·s^-2 |
| Standard Acceleration of Gravity | g_n | 9.80665 | 0 | Meters per second squared | m/s^2 |
| Vacuum Permeability | mu_0 | 1.2566e-6 | 1.9000e-16 | Henry per metre | H/m |
| Faraday Constant | F | 96,485.33212 | 0 | Coulomb per mole | C/mol |
| Stefan-Boltzmann Constant | sigma | 5.6704e-8 | 0 | Watts per square metre per kelvin to the fourth | W·m^-2·K^-4 |
| Neutron Mass | m_n | 1.6749e-27 | 9.5000e-37 | Kilogram | kg |
| Proton-Electron Mass Ratio | m_p/m_e | 1,836.152673 | 1.1000e-7 | Dimensionless | |
| Magnetic Flux Quantum | Phi_0 | 2.0678e-15 | 0 | Weber | Wb |