On Nov 1, 6:07 pm, "Maxwell" wrote:
"cavelamb himself" wrote in message

...



You know, an ABSOLUTE vacuum is only 15 psi...

Correct, one atmosphere, what is your point?

Wrong.

Absolute vacuum is 0 psia.

At sea level that will be about -14.7 psig.

Go to Death Valley or underwater and it will be less.

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FF