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Four-force
About: Four-force is a research topic. Over the lifetime, 3459 publications have been published within this topic receiving 87308 citations.
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TL;DR: In this article, the authors presented the solutions of the equations of Rainich's "already unified theory" for the case when the field is static and the diagonalized metric tensor components are functions of one coordinate alone.
36 citations
Book•
30 Jan 1992
TL;DR: In this paper, a review of phenomena by the Einstein theory of gravitation gravitational waves great numbers, gravitation versus quantum phenomena cosmology the Einstein-Cartan theory, and the principle of equivalence geometric foundations of the general theory of relativity are discussed.
Abstract: Physical phenomena, models, theories Galilean spacetime in search of the ether predictions of the theory of relativity and their experimental verification Minkowski geometry the Lorentz group and the shape of bodies in motion particles and fields in special relativity theory spinors Newtonian theory of gravitation and the principle of equivalence geometric foundations of the general theory of relativity Einstein equations some aspects of the general relativity theory algebraic classification of gravitational fields review of phenomena by the Einstein theory of gravitation gravitational waves great numbers, gravitation versus quantum phenomena cosmology the Einstein-Cartan theory.
36 citations
01 May 2014
TL;DR: In this paper, the original figures were drawn using a vector graphics program (Canvas 9) and should be printed from vector graphic files, e.g. epsf.
Abstract: Typesetter: the figures embedded here are lower resolution tif images. The original figures were drawn using a vector graphics program (Canvas 9) and should be printed from vector graphic files, e.g. epsf.
36 citations
TL;DR: The mathematical approach to General Relativity insists that all coordinate systems are equal as mentioned in this paper, but physicists and astrophysicists in fact almost always use preferred coordinate systems not merely to simplify the calculations but also to help define quantities of physical interest.
Abstract: The mathematical approach to General Relativity insists that all coordinate systems are equal. However physicists and astrophysicists in fact almost always use preferred coordinate systems not merely to simplify the calculations but also to help define quantities of physical interest. This suggests we should reconsider and perhaps refine the dogma of General Covariance.
36 citations
TL;DR: The theory of special relativity is based on a principle of relativity for inertial frames as applied to mechanical phenomena only as discussed by the authors, and the experimental result that the free-space speed of light with respect to the earth is equal to k then implies the same free space speed for every inertial frame, the usual starting point of the theory.
Abstract: A development of the theory of special relativity is based on a principle of relativity for inertial frames as applied to mechanical phenomena only. The Lorentz-transformation equations and the familiar mass-variation formula are deduced from the observation that mass does vary with speed; but in these the speed of light c is everywhere replaced by a universal speed k—namely, the speed at which the mass of any particle must become infinite—which arises as a consequence of the assumptions. The experimental result that the free-space speed of light with respect to the earth is equal to k then implies the same free-space speed of light with respect to every inertial frame—the usual starting point of the theory.
36 citations