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It is only heard less often in the classroom because many teachers and most textbooks head off the question by hastily assuring students that
http://www.metaresearch.org/cosmology/speed_of_gravity....
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Speed of gravity - Wikipedia, the free encyclopedia
In the context of classical theories of gravitation, the speed of gravity refers to the speed at which a gravitational field propagates. This is the speed at which changes in the distribution of ene...
en.wikipedia.org/wiki/Speed_of_gravity |
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In the theory of relativity, the speed of gravity should be equal to the speed of light, since the theoretical "particles" that carry gravity (sometimes called gravitons) are massless particles, just like photons (the particles that carry light).
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Indeed, it is widely accepted, even if less widely known, that the speed of gravity in NewtonÕs Universal Law is unconditionally infinite.
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Noted physicists are criticizing a report last week that suggested the speed with which gravity propagates had been determined and was equal to the speed of light. ... "The claim that they've measured the speed of gravity is simply incorrect," said Clifford Will, a physicist at Washington University in St Louis, Missouri,
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The mere existence of Lorentzian relativity as an experimentally viable model for the relativity of motion nullifies the “proof†that nothing can propagate faster than light in forward time. ... We recently reviewed six experiments bearing on the question of the propagation speed of gravity. [1] Briefly, these are:
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The speed of gravity is the rate, in meters per second or other standard units, at which gravitational fields or effects propagate through space. ... The speed of gravity is the rate, in meters per second or other standard units, at which gravitational fields or effects propagate through space. According to classical...
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Nature - the world's best science and medicine on your desktop ... The speed of gravity is the same as that of light, say two physicists. ... Knowing the speed of gravity is important for theories that attempt to unify the two pillars of physics: general relativity and quantum mechanics.
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