Introduction to Electrodynamics_ 3rd Ed_ David J Griffiths_ Benjamin Cummings_ 1999

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By ICT Director Posted on Dec 11, 2021
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Newtonian mechanics was found to be inadequate in the early years of this century-it's all right in "everyday life," but for objects moving at high speeds (near the speed of light) it is incorrect, and must be replaced by special relativity (introduced by Einstein in 1905); for objects that are extremely small (near the size of atoms) it fails for different reasons, and is superseded by quantum mechanics (developed by Bohr, Schrodinger, Heisenberg, and many others, in the twenties, mostly).
Newtonian mechanics was found to be inadequate in the early years of this century-it'sall right in "everyday life," but for objects moving at high speeds (near the speed of light)it is incorrect, and must be replaced by special relativity (introduced by Einstein in 1905);for objects that are extremely small (near the size of atoms) it fails for different reasons,and is superseded by quantum mechanics (developed by Bohr, Schrodinger, Heisenberg,and many others, in the twenties, mostly). For objects that are both very fast and verysmall (as is common in modem particle physics), a mechanics that combines relativity andquantum principles is in order: this relativistic quantum mechanics is known as quantumfield theory-it was worked out in the thirties and forties, but even today it cannot claimto be a completely satisfactory system. In this book, save for the last chapter, we shallwork exclusively in the domain of classical mechanics, although electrodynamics extendswith unique simplicity to the other three realms. (In fact, the theory is in most respectsautomatically consistent with special relativity, for which it was, historically, the mainstimulus.)

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