(TFT) Re: TFT Digest V3 #1005

[Mark Tapley <mtapley@swri.edu>]

At 20:46 -0400 4/28/08, TFT Digest wrote:
> An explosion expands in a sphere so I would expect
> it to decrease ~1/r^3.

The volume of a sphere does indeed go as 1/r^3, but the surface area, 
along which the shock wave acts, goes as 1/r^2. I had thought the 
latter was a better approximation, but I'm not sure about that. If 
PvK is doing actual research, he'll be much better qualified to 
answer than me.
--
						- Mark, 210-379-4635
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Large Asteroids headed toward planets
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