Constants Module

Constants Module

This module contains physical constants and conversion factors.

constants.H

Planck’s constant (J·s)

constants.C

Speed of light in vacuum (m/s)

constants.AU_TO_J

Hartree to Joule conversion factor (J)

constants.CM1_TO_AU

Conversion factor from wavenumbers (cm^-1) to atomic units

constants.AU_TO_EV

Conversion factor from atomic units to electron volts (eV)