1 PHYSICS UNIVERSAL CONSTANTS IN PHYSICS Quantity Symbol Value Unit Constant of gravitation Speed of light in vacuum Gas constant Avogadro constant Boltzmann constant G c R NA k N m2 kg–2 Stefan-Boltzmann constant Wien’s displacement law constant Charge of proton Mass of electron 𝜎 b e me Mass of proton mp Mass of neutron mn Permeability of vacuum 𝜇0 6.67259 x 10-11 2.9979245 x 108 8.314510 6.022136 x 1023 1.380658 x 10-23 8.617385 x 10-5 5.67051 x 10-8 2.897756 x 10-3 1.602177 x 10-19 9.109389 x 10-31 5.4857990 x 10-4 1.672623 x 10-27 1.007276470 1.674928 x 10-27 1.008664904 4π x 10-7 =12.566… x 10-7 Permittivity of vacuum ε0 Faraday constant Planck constant F h Rydberg constant Ground state energy of hydrogen atom Bohr radius Coulomb constant R Atomic mass unit a0 ke u 8.8541… x 10-12 96485.3029 6.626075 x 10-34 4.135669 x 10-15 1.0973731 x 10-7 13.605698 5.291772 x 10-11 8.9875517923(14) ×109 1.6605390666(50)× 10−27 ms-1 JK-1 -mol-1 mol-1 JK-1 eV K-1 W m-2 K-4 m-K C Kg u Kg u Kg u N A-2 C mol-1 J-s eV-s m-1 eV m kg⋅m ⋅s−2⋅C−2 3 Kg Angler M. 1