Set v = c to obtain Schwarzchild radius. https://en.wikipedia.org/wiki/Schwarzschild_radius …
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Replying to @dcwuser @InertialObservr
It’s a misleading coincidence that the Schwarzchild radius is where the classical escape velocity equals c, and this is often misexplained when introducing the concept of black holes
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well for one there's no reason newton's laws should be able to say anything about strong gravitational fields and be correct
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that's what we mean by coincidence .. you can't expect that what you plug into Newton's laws will agree with GR
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that's precisely what we're saying! that it takes GR to properly treat it
6:24 PM - 13 Jan 2020
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