| 单词 | Coulomb's law |
| 释义 | Coulomb's law The force (sometimes called the Coulomb force ) between two charged particles, regarded as point charges Q1 and Q2 a distance d apart, is proportional to the product of the charges and inversely proportional to the square of the distance between them. The law is now usually stated in the form F = Q1Q2/4πεd2, where ε is the absolute permittivity of the intervening medium. ε = εrε0, where εr is the relative permittivity (the dielectric constant) and ε0 is the electric constant. The electric field surrounding a point charge is called the Coulomb field and the scattering of charged particles by the Coulomb field surrounding an atomic nucleus is called Coulomb scattering . The law was first published by Charles de Coulomb in 1785 |
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