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Re: Schwarzchild Metric

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Posted by Jim Bergquist on January 1, 2001 22:44:07 UTC

I get the same result. The Schwarzchild metric is:

ds^2=-(1-2M/r)dt^2 + dr^2/(1-2M/r)

for light ds=0 so

(1-2M/r)dt^2=dr^2/(1-2M/r)

(dr/dt)^2=(1-2M/r)^2

dr/dt=±(1-2M/r)

r=2M -> dr/dt=0!

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