Titlebook: Basic Electromagnetism; E. R. Dobbs Book 1993 E.R. Dobbs 1993 electricity.electromagnetic.electromagnetic wave.electromagnetism.electrosta

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Electromagnetic waves in conductors,e densities of these carriers (Table 12.1) varies from 9 × 10. m . in a noble metal to about 10.–10. m . in semiconductors and dense plasmas, but can be as little as 10. m . in weakly ionized plasmas like the ionosphere, while interstellar gas has a density of about 10. m ..

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Magnetostatics,lectric current . in matter and introduce the concept of the magnetic field ., sometimes called the magnetic induction field. The relationships between steady or magnetostatic fields having ../. = 0 and steady or direct electric currents having ../. = 0 are then developed and illustrated with examples.

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Electromagnetism and relativity,ons of magnetostatics in terms of the vectors . and .. Finally we show, using a four-dimensional notation, that it is possible to reduce Maxwell’s four equations to just one equation which expresses directly the invariance of electromagnetism under the Lorentz transformation.

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