/usr/share/pyshared/quantities/constants/tau.py is in python-quantities 0.10.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"""
"""
from __future__ import absolute_import
from ._utils import _cd
from ..unitquantity import UnitConstant
m_tau = tau_mass = UnitConstant(
'tau_mass',
_cd('tau mass'),
symbol='m_tau',
u_symbol='m_τ'
)
lambda_C_tau = tau_Compton_wavelength = UnitConstant(
'tau_Compton_wavelength',
_cd('tau Compton wavelength'),
symbol='lambda_C_tau',
u_symbol='λ_C_τ'
)
tau_Compton_wavelength_over_2_pi = UnitConstant(
'tau_Compton_wavelength_over_2_pi',
_cd('tau Compton wavelength over 2 pi'),
symbol='lambda_C_tau',
u_symbol='ƛ_C_τ'
)
tau_mass_energy_equivalent = UnitConstant(
'tau_mass_energy_equivalent',
_cd('tau mass energy equivalent'),
symbol='(m_tau*c**2)',
u_symbol='(m_τ·c²)'
)
tau_mass_energy_equivalent_in_MeV = UnitConstant(
'tau_mass_energy_equivalent_in_MeV',
_cd('tau mass energy equivalent in MeV')
)
tau_mass_in_u = UnitConstant(
'tau_mass_in_u',
_cd('tau mass in u')
)
tau_molar_mass = UnitConstant(
'tau_molar_mass',
_cd('tau molar mass'),
symbol='M_tau',
u_symbol='M_τ'
)
tau_electron_mass_ratio = UnitConstant(
'tau_electron_mass_ratio',
_cd('tau-electron mass ratio'),
symbol='(m_tau/m_e)',
u_symbol='(m_τ/mₑ)'
)
tau_muon_mass_ratio = UnitConstant(
'tau_muon_mass_ratio',
_cd('tau-muon mass ratio'),
symbol='(m_tau/m_mu)',
u_symbol='(m_τ/m_μ)'
)
tau_neutron_mass_ratio = UnitConstant(
'tau_neutron_mass_ratio',
_cd('tau-neutron mass ratio'),
symbol='(m_tau/m_n)',
u_symbol='(m_τ/m_n)'
)
tau_proton_mass_ratio = UnitConstant(
'tau_proton_mass_ratio',
_cd('tau-proton mass ratio'),
symbol='(m_tau/m_p)',
u_symbol='(m_τ/m_p)'
)
del UnitConstant, _cd
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