"The first forces brought into mathematical formulation were gravitational forces, as seen in planetary motion. Next were elastic forces. Then followed electric and magnetic forces... Their [electric and magnetic forces] study was mostly a product of the nineteenth century. ...electromagnetic forces are of a far wider application than was first supposed. It has become evident that, instead of being active only in electrostatic and electromagnetic applications such as the telegraph, , and radio, the forces between the nuclei and electrons of single atoms, the chemical forces between atoms and molecules, the forces of cohesion and elasticity holding solids together, are all of an electric nature. ...electromagnetic theory ...carries us rather far into the structure of matter ...The equations underlying the theory, Maxwell's equations, are relatively simple, but not nearly so simple as Newton's ."
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Original Language: English
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John C. Slater, Nathaniel Herman Frank, Electromagnetism (1947)
https://en.wikiquote.org/wiki/Electromagnetism
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Electromagnetism
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