Physics
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Willie Wong

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30 What is the logarithm of a kilometer? Is it a dimensionless number? Aug 2 '11
29 What is known about the topological structure of spacetime? Dec 13 '10
27 Can a black hole be formed by electromagnetic radiation? Aug 28 '11
26 Mathematically-oriented Treatment of General Relativity Sep 23 '11
19 How is it possible for astronomers to see something 13B light years away? Jul 2 '11
15 Nature of spacetime 4-vector and tangent space? Jun 17 '11
15 Killing vector fields Oct 15 '12
14 Why do objects follow geodesics in spacetime? Apr 25 '12
13 Why is an Aircraft Runway NOT like a Teaspoon? Jul 12 '12
12 Orientability of spacetime Aug 31 '11
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