elementary charge

elementary charge

noun Physics.
the unit of electric charge of which all free charges found in nature are integral multiples, equal to 1.602 × 10 −19 coulombs, the charge of the proton.
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elementary charge

(symbol e), fundamental physical constant expressing the naturally occurring unit of electric charge, equal to 1.6021892 1019 coulomb, or 4.80325 1010 electrostatic unit (esu, or statcoulomb). In addition to the electron, all freely existing charged subatomic particles thus far discovered have an electric charge equal to this value or some whole-number multiple of it. Quarks, which are always bound within larger subatomic particles such as protons and neutrons, have charges of 13 or 23 of this value

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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