constants.py

c 		= 	299792458 			# m/s				speed of light in a vacuum
hbar	=   1.0545718*10**(-34)	# J s				reduced Planck constant
G		=  	6.674*10**(-11)		# m^3 kg^-1 s^-2	gravitational constant
eV		=	1.6021766*10**(-19) # J					electron volt
mP		=	1.673*10**(-27)		# kg				proton mass
mN		=	1.673*10**(-27)		# kg				neutron
mE		=	9.109*10**(-31)		# kg				electron
mS		= 	1.9891*10**30		# kg				sun
R0 		= 	G*mS/c**2 			#1/2 schwartzschild radius

epsilon0 = mN**4*c**5/(3*3.14159265359**2*hbar**3)