RE: >H Re: Deep time and shallow time

From: Eugene Leitl (eugene.leitl@lrz.uni-muenchen.de)
Date: Thu May 27 1999 - 19:09:37 MDT


Billy Brown writes:
> We've already got instruments that can pick up a mass of around
> 50 tons at a distance of a couple of miles, which ought to be good enough
> for even really picky measurements.

Really? What physical principles do these sensors utilize?



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