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# constants.py, constants available in Calculate,
# by Reinier Heeres <reinier@heeres.eu>
# Most of these come from Wikipedia.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import math as _math
pi = _math.pi # 3.1415926535
e = _math.exp(1) # 2.7182818284590451
class math:
golden_ratio = 1.61803398874989484820458683436563811
class physics:
c = 299792458 # Speed of light (in vacuum)
h = 6.6260689633e-34 # Planck's constant
hbar = 1.05457162853e-34 # Dirac's constant
mu0 = 4e-7 * pi # Magnetic permeability of vacuum
e0 = 8.854187817e-12 # Electric permeability of vacuum
Na = 6.022141510e23 # Avogadro's number
kb = 1.380650524e-23 # Boltmann's constant
R = 8.31447215 # Gas constant
c_e = -1.60217648740e-19 # Electron charge
m_e = 9.109382616e-31 # Electron mass
m_p = 1.6726217129e-27 # Proton mass
m_n = 1.6749272928e-27 # Neutron mass
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