Quote:
Originally Posted by Omaroo
Vacuum chambers are evacuated by pumps. These are never fully able to attain a true vacuum and there are always pleny of molecules floating around. I think that DJDD was asking what partial pressure they are able to achieve and for the volume of the chamber, how long it takes to get there.
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I have worked on ultra-high vacuums (
http://en.wikipedia.org/wiki/Ultra-high_vacuum) and even evacuating small volumes (less than 1 cubic meter) would take all night. And then when vacuum was broken you would have to go through that all again!
I do not think the vacuum chamber in this article will get down to those pressures but would be interested to know.