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Re: Hubble and singularity
Posted:
Aug 18, 2007 11:26 AM


Rupee wrote: > According to Hubble's law, radius r of universe as a function of time > t is: > > dr/dt= H r > > Integrating > r=exp(Ht) +R or > r=r0 exp(Ht)
Hubble's constant, despite its name, is also a function of time. It was much larger in the past, and goes to infinity as you approach the big bang. It's called a constant because it's been effectively constant for the whole of human history.
 Ben



