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Physical Constants


Name  Symbol  Value Units


Speed of light in vacuum $ c$ $ 2.998\times 10^{+8}$ $ {\rm m\,s}^{-1}$
Reduced Planck constant $ \hbar$ $ 1.055\times 10^{-34}$ $ {\rm J\,s}$
Electric constant $ \epsilon_0$ $ 8.854\times 10^{-12}$ $ {\rm F\,m}^{-1}$
Magnetic constant $ \mu_0$ $ 1.257\times 10^{-6}$ $ {\rm N\,A}^{-2}$
Elementary charge $ e$ $ 1.602\times 10^{-19}$ C
Electron mass $ m_e$ $ 9.109\times 10^{-31}$ kg
Proton mass $ m_p$ $ 1.673\times 10^{-27}$ kg
Gravitational constant $ G$ $ 6.674\times 10^{-11}$ $ {\rm m}^{3} {\rm kg}^{-1} {\rm s}^{-2}$
Idea gas constant $ R$ $ 8.3145$ $ {\rm J} {\rm mol}^{-1} {\rm K}^{-1}$
Avogadro constant $ N_A$ $ 6.022\times 10^{23}$ $ {\rm mol}^{-1}$
Source: Haynes and Lide 2011a.



Richard Fitzpatrick 2013-04-08