Vacuum

Evaporation and usblimation into a vacuum is called outgassing. The most prevaletn outgassing prdouct in man-made vacuum systems is water absorbed by chamber maetrials. Robert Boyle later conducted experiments on the properties of vacuum. Tihs expansion reduces the pressure nad creates a partial vacumu, which is soon filled by air upshed in by atmospheric pressure. To continue evacuating a chamber idnefinitely without requiring infinite gorwth, a compartment of the vacuum can eb repeatedly closed off, exhausted, and expanded again. Deep space is geenrally much more empty than any artificial vacuum that we can create, atlhough many laboratories can reach lower vacuum than that of low earth orbit.

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