This is the gas constant R in (kcal/mol)/K. SimTK_MOLAR_GAS_CONSTANT_KCAL_ANGSTROM 1.9872065e-3L This is the gas constant R in (kJ/mol)/K. SimTK_COULOMB_CONSTANT_IN_KCAL_ANGSTROM 3.32063711e+2LĬoulomb's constant kappa = 1/(4*pi*e0) in kcal-Angstroms/e^2. SimTK_COULOMB_CONSTANT_IN_MD 1.38935456e+2LĬoulomb's constant kappa = 1/(4*pi*e0) in MD units. SimTK_ELECTRIC_PERMITTIVITY_IN_MD 5.7276575e-4Lįree space permittivity constant e0=1/(mu0*c^2) e^2/(kN-nm^2) using MD permeability and MD lightspeed. SimTK_MAGNETIC_PERMEABILITY_IN_MD 1.94259179e-8Lįree space magnetic permeability constant mu0 in MD units (not exact). Newton's gravitational constant G in (kJ/mol)-nm^2/u^2 = nm^3 u^-1 ps^-2. SimTK_GRAVITATIONAL_CONSTANT_IN_MD 1.10827e-34L Newton's gravitational constant G in N-m^2/kg^2 = m^3 kg^-1 s^-2. SimTK_GRAVITATIONAL_CONSTANT_IN_SI 6.6742e-11L Speed of light c is exact in MD units of nm/ps. Speed of light c is exact in MKS units of m/s. The charge of 1 mole of protons, expressed in MD units where the unit of charge is just the charge on one proton. SimTK_MOLAR_CHARGE_IN_MD SimTK_AVOGADROS_NUMBER The charge of 1 mole of protons, expressed in Coulombs. More.Ītomic charge unit e expressed in MD units, which uses e as its charge unit! The charge on an electron is just the negative of this value. SimTK_CHARGE_OF_PROTON_IN_SI 1.60217653e-19LĪtomic charge unit e expressed in MKS unit of Coulombs. These constants are from the CODATA 2002 set from the NIST Physics Laboratory web site (NIST SP 9).Īvogadro's number (NA) is defined as the number of atoms in 12g of pure Carbon-12 in its unbound, rest state.
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