.. _sec-constants-file:

constants.py
============

A database like file containing numerical values of various natural constants
in SI units .

Avogadro constant [1/mol]
    - ``N_A`` = 6.022 :math:`\cdot` 10\ :math:`{}^{23}`

Bohr's Magneton [J/T]
    - ``mu_bohr`` = 9.274009994 :math:`\cdot` 10\ :math:`{}^{-24}`

Bohr radius [m]
    - ``a0`` = 5.2917721067 :math:`\cdot` 10\ :math:`{}^{-11}`

Boltzmann constant [J/K]
    - ``k_B`` = 1.38064852 :math:`\cdot` 10\ :math:`{}^{-23}`

Dielectric constant in vacuum [C / V / m]
    - ``eps0`` = 8.854 :math:`\cdot` 10\ :math:`{}^{-12}`

Electronvolt [J]
    - ``eV`` = 1.6021766208 :math:`\cdot` 10\ :math:`{}^{-19}`

Electron mass [kg]
    - ``m_e`` = 9.10938356 :math:`\cdot` 10\ :math:`{}^{-31}`

Planck's constant [J * s]
    - ``h`` = 6.626070040 :math:`\cdot` 10\ :math:`{}^{-34}`

reduced Planck's constant [J * s]
    - ``hbar`` = h / (2 :math:`\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




.. automodule:: constants
    :members: