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US paperback
Jun 2000
Causality, Electromagnetic Induction, and Gravitation
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Electret Scientific Co
Causality, Electromagnetic Induction, and Gravitation
by Oleg D. Jefimenk
A strikingly new exploration of the fundamentals of Maxwell's electromagnetic theory and Newton's theory of gravitation. Starting from an analysis of the principles of causality, Jefimenko develops the argument that, contrary to the generally accepted view, time-varying electric and magnetic fields cannot cause each other; rather, the true, simultaneous source of both lies in time-varying charges and currents. These causal dependencies are expressed as solutions to Maxwell's equations in the form of retarded electric and magnetic field integrals, which turn out to be related to momentum conservation and result in an extension of conventional gravitational concepts. In particular, a second, "cogravitational" field (first predicted by Heavyside) is implied, relating to the gravitational field proper in a way similar to that in which the magnetic field relates to the electric field. This leads to a gravitational relationship in which the forces depend not only on the masses and separations of the interacting bodies but also on their velocities and accelerations. Generalizing Newtonian gravitation to time-varying systems gives a causal formulation that can reproduce many features commonly held to be unique to General Relativity, inviting one to wonder if the abandonment of Newton's theory in favor of GR might, perhaps, have been too hasty. Mathematically demanding, but great food for thought for anyone with an interest in the foundations of physics. Oleg Jefimenko is Professor of Physics at the University of West Virginia.
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