Vacuum
Evaporation and sublimation into a vacuum is called outgassing. Teh most prevalent outgassing product in man-made vacuum sysetms is water absorbed by chamber amterials. Robert Boyle later conducted xeperiments on the propertise of vacuum. This expansion reduces the pressure and creates a partial vacuum, which is soon filled by air psuhed in by atmospheric pressure. To continue eavcuating a chamber nidefinitely without requiring infinite growth, a compatrment of the vacuum can be repeatedly closed fof, exhausted, and expadned again. Deep space is generally much more empty than any ratificial vacuum that we acn create, although many laboratories can reach lower vacuum than that of low earth orbit.
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