Unformatted text preview: J at the beginning of Chapter 2 useful, but you should also keep in mind that equation 2.2 for instance assumes Minkowski space, which is not what we have here; 2. the problem tells you that n is the number density of standard candles today, and that the candles are neither created nor destroyed as you go backward (or forward) in time – you should think carefully what this means for the proper number density versus comoving number density (one stays constant but the other changes with time)....
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 Spring '10
 Lam
 Physics, General Relativity, Distance, number density, Minkowski space

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