Calculates the physical constants from mass and
velocity for any set of units.
Inputs values for the speed of light and Planck mass,
default (input '0') are the CODATA 2014 SI values.


mass unit (default = m_P)
velocity unit (default = c)

Physical constants:

Planck constant
h = 6.626 070 040(81)e-34

elementary charge
e = 1.602 176 6208(98)e-19

speed of light
c = 299792458

Gravitation constant
G = 6.674 08(31)e-11

Boltzmann constant
k_B = 1.380 648 52(79)e-23

electron mass
m_e = 9.109 383 56(11)e-31

Rydberg
R = 10 973 731.568 508(65)

Planck mass
m_P = 2.176 470(51)e-8

Planck length
l_p = 1.616 229(38)e-35

Planck time
t_p = 5.391 247(60) e-44

3 dimensionless constants used are pi,
the fine structure constant alpha and Omega.
a = 137.035999139;
Omega = 2.0071349496;