Gravitation, Cosmology, and Cosmic-Ray Physics (1986) / Chapter Skim
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1. Experimental Tests of General Relativity: Introduction
1. Experimental Tests of General Relativity: Introduction
Pages 11-14
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From page 11... ...
Fortunately for the field, the last two decades have seen dramatic advances in our ability to test gravitation theories. Most of this upsurge in experimental activity was brought about by technological advances in radio and radar astronomy and by the development of precision tracking capabilities for solar-system spacecraft.
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From page 12... ...
In the Newtonian limit of any metric theory of gravitation, the gravitomagnetic field and space curvature vanish; the much stronger gravitoelectric field reduces to the Newtonian gravitational acceleration. In the post-Newtonian regime, a rich variety of new phenomena appear, such as the gravitomagnetic dragging of inertial frames, the gravitoelectric and space-curvature-induced gravitational deflection of light, and the perihelion advance of planetary orbits.
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From page 13... ...
Currently the best tested parameters are ~ and P; these describe, respectively, the amount of spatial curvature generated by a unit rest mass and the amount of nonlinearity in the superposition of Newtonian gravitational potentials (gravitoelectric fieldsJ. There is also one parameter that describes the amount of any preferred-location effect, three that describe the amount and kind of preferred-frame effects, and five (four distinct from those already listed)
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From page 14... ...
This remains as a bright hope for the next decade.
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