Vacuum is space void of matter. The word stems from the Latin adjective vacuus for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space.
| Attributes | Values |
|---|---|
| rdfs:comment |
|
| rdfs:seeAlso | |
| foaf:depiction | |
| thumbnail | |
| is industry of | |
| is instrument of | |
| is product of |