- #1
21joanna12
- 126
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I'm a bit confused about the derivation of the Schwarzschild radius. I can do it quite easily using Newton's Law of gravitation, but this law is only an approximation, so I am wondering whether the result I obtain,
[itex]r_{s}=\frac{2GM}{c^{2}}[/itex], is an approximation or not. It seems to me that it should be, however Wikipedia insists that Schwarzschild derived this result from the Einstein field equations. Is this just a special case where Newton's Equations happen to give exactly the same answer as Einstein's field equations, or am I missing something?
Thanks in advance :)
[itex]r_{s}=\frac{2GM}{c^{2}}[/itex], is an approximation or not. It seems to me that it should be, however Wikipedia insists that Schwarzschild derived this result from the Einstein field equations. Is this just a special case where Newton's Equations happen to give exactly the same answer as Einstein's field equations, or am I missing something?
Thanks in advance :)