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by hyperbrainer 457 days ago
In GR, the speed of gravitational waves is _exactly equal_ to c.
1 comments
oneshtein 456 days ago
In reality, speed of light is slightly lower than speed of gravitation, because gravitation slows down speed of light.
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hyperbrainer 456 days ago
We were presumably talking about an ideal massless space [Minkowski] in which the speed of light in a vaccuum is considered -- that is what c is defined as.
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