a buncha constants that come in handy while doin some calculations!!! use em for astrophysics or whatever, i don't care1!!!

constants.py

# a buncha constants that come in handy while doin some calculations!!!
# just copy and paste this and run it in your ipython or julia interpreter,
# what are you worried about?? it's just a buncha constants, i didn't
# make em up, i'm just usin em!!!!!
alpha = 0.00729927          # fine structure constant
k = 1.38064852e-23          # boltzman constant (J/K)
keV = 8.6173324e-5          # boltzman constant (eV/K)
Na = 6.022140857e23         # avogadro constant (1/mol)
RgasJ = 8.3144598           # gas constant (J/(K mol))
atm = 1.013e5               # 1 atmosphere (N/m^2)
bar = 1e5                   # 1 bar (N/m^2)
sigma = 5.670367e-8         # stefan constant (W/(m^2 K^4))
Ms = 1.98855e30             # solar mass (kg)
Ls = 3.828e26               # solar luminosity (W)
Rs = 6.957e8                # solar radius (m)
c = 2.99792458e8            # speed of light (m/s)
pi = 3.14159265359          # pi
h = 6.62607004e-34          # planck constant (Js)
heV = 4.135667662e-15         # planck constant (eVs)
hbar = 1.054571800e-34      # reduced planck constant (Js)
hbareV = 6.582119514e-16    # reduced planck constant (eVs)
hcJ = 1.98644568e-25        # h*c (Jm)
hceV = 1.23984193e-6        # h*c (eVm)
e = 1.60217662e-19          # electron charge (C)
eV = e                      # electron volts/joule ()
me = 9.10938356e-31         # electron mass (kg)
mp = 1.6726219e-27          # proton mass (kg)
eps0 = 8.854187817e-12      # vacuum permittivity (F/m)
Ggrav = 6.67408e-11         # newton gravitational constant (N m^2 / kg^2)