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- "File PHYSICAL.MTH, copyright (c) 1990-2000 by Texas Instruments Incorporated"
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- "Fundamental Physical Constants -- Reference: Physics Today, August 1989"
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- "Load METRIC.MTH when using this file."
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- "Speed of light in vacuum:"
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- c_:=299792458*(meter/second)
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- "Newtonian constant of gravitation:"
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- g_:=6.6726*10^(-14)*(meter^3/(gram*second^2))
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- "Planck constant:"
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- h_:=6.6260755*10^(-34)*joule*second
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- "Elementary charge:"
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- e_:=1.60217733*10^(-19)*coulomb
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- "Fine structure constant:"
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- alpha:=0.00729735308
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- "Rydberg constant:"
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- r_inf:=10973731.534/meter
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- "Bohr radius:"
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- a0:=5.29177249*10^(-11)*meter
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- "Mass of an electron, proton, and neutron:"
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- me:=9.1093898*10^(-28)*gram
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- mp:=1.6726231*10^(-24)*gram
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- mn:=1.6749286*10^(-24)*gram
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- "Compton wavelength of an electron, proton, and neutron:"
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- lambda_c:=2.42631058*10^(-12)*meter
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- lambda_cp:=1.32141002*10^(-15)*meter
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- lambda_cn:=1.3195911*10^(-15)*meter
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- "Classical radius of an electron:"
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- re_:=2.81794092*10^(-15)*meter
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- "Avogadro constant:"
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- na:=6.0221367*10^23/mole
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- "Faraday constant:"
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- f_:=96485.309*(coulomb/mole)
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- "Molar gas constant:"
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- r_:=8.314511*(joule/(mole*degree_kelvin))
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- "Boltzmann constant:"
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- k_:=1.380658*10^(-23)*(joule/degree_kelvin)
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- "Stefan-Boltzmann constant:"
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- sigma:=5.67051*10^(-8)*watt/(meter^2*degree_kelvin^4)
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- "Standard acceleration of gravity:"
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- gn:=9.80665*(meter/second^2)