constants.py
A database like file containing numerical values of various natural constants in SI units .
- Avogadro constant [1/mol]
N_A= 6.022 \(\cdot\) 10\({}^{23}\)
- Bohr’s Magneton [J/T]
mu_bohr= 9.274009994 \(\cdot\) 10\({}^{-24}\)
- Bohr radius [m]
a0= 5.2917721067 \(\cdot\) 10\({}^{-11}\)
- Boltzmann constant [J/K]
k_B= 1.38064852 \(\cdot\) 10\({}^{-23}\)
- Dielectric constant in vacuum [C / V / m]
eps0= 8.854 \(\cdot\) 10\({}^{-12}\)
- Electronvolt [J]
eV= 1.6021766208 \(\cdot\) 10\({}^{-19}\)
- Electron mass [kg]
m_e= 9.10938356 \(\cdot\) 10\({}^{-31}\)
- Planck’s constant [J * s]
h= 6.626070040 \(\cdot\) 10\({}^{-34}\)
- reduced Planck’s constant [J * s]
hbar= h / (2 \(\cdot\) 3.14159265358979)
- reduced Planck’s constant [eV * s]
hbar_eV= hbar / eV
- Rydberg constant [1 / m]
R_const= 10973731.56816
- Speed of light [m / s]
c= 299792458.
- Universal Gas constant [J / K / mol]
R= 8.3144598