compressing what?

["John Hertzman" <johnhertzman@domain.elided>]

Interesting bunch of responses to Fred's question. Without much method to my
maddness I initially wondered what reading you would then get at 30,000 feet,
thirty miles, or midway between the solar system and Alfa Centauri. If you
could pull 200 psi out of a complete vacuum it should be good for some
practical use -
Andiamo,
John
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