c = 2.998*10**8    #Speed of light
h = 6.626*10**-34  #Planck's constant
R = 1.0974*10**7  #Rydberg constant
Kw = 1.0e-14  #Ion-product constant of Water
AVOGADROS_NUMBER = 6.02e+23
F = 96485 #Faraday's constant in coulombs