Gravitoelectromagnetism
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Gravitoelectromagnetism, abbreviated GEM, is a set of formal analogies between the equations for electromagnetism and relativistic gravitation. More specifically, it is an analogy between Maxwell's fi
Diagram regarding the confirmation of gravitomagnetism by Gravity Probe B
Gravitational wave
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Gravitational waves are waves of spacetime curvature produced by the relative motion of gravitating masses and which propagate away at the speed of light. They were first predicted by Albert Einstein
Gravitoelectromagnetism
…theory is obtained. In a vacuum ( ρ g = 0 ) a wave equation is obtained under non-stationary conditions. GEM therefore predicts the existence of gravitational waves. In this way GEM can be regarded as a generalization of Newton's gravitation theory. The wave equation for the gravitomagnetic potential A g can also…
The gravitational wave spectrum with sources and detectors. Credit: NASA Goddard Space Flight Center
Artist's impression of merging neutron stars, a source of gravitational waves
Now disproved evidence allegedly showing gravitational waves in the infant universe was found by the BICEP2 radio telescope. The microscopic examination of the focal plane of the BICEP2 detector is shown here. In January 2015, however, the BICEP2 findings were confirmed to be the result of cosmic dust.