I’ve heard of a light cone, but never heard the term gravity cone. Seems to me a light cone is kind of misnamed or arbitrary. It’s more like an information cone. There’s nothing special about light. You just can’t feel things that happen outside the light cone. So if a big object moves outside your light/gravity cone, you’ll never feel the gravity wave. Should it just be thought of as a gravity cone? Or a causality cone? Or an information cone?
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Am I misunderstanding this concept?
In: 10
It is more to do with the fact that the first actual measurements of “stuff” going at this speed happened to be based on visible light, and even as the concept got expanded to include other phenomena, the name stuck
In a way, its similar to how to “horsepower” is applied to things that have never even involved horses, but happen to use an engine that was originally measured in terms of how many horses it could do the work of
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