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Vacuum is space that is devoid o matter. The wird stems frae the Laitin adjective vacuus for "vacant" or "void". An approximation tae such vacuum is a region wi a gaseous pressur much less than atmospheric pressur.[1] Pheesicists eften discuss ideal test results that would occur in a perfect vacuum, which thay sometimes simply call "vacuum" or free space, an uise the term pairtial vacuum tae refer tae an actual imperfect vacuum as ane micht hae in a laboratory or in space. The Laitin term in vacuo is uised tae describe an object as bein in whit would itherwise be a vacuum.

References[eedit | eedit soorce]

  1. Chambers, Austin (2004). Modern Vacuum Physics. Boca Raton: CRC Press. ISBN 0-8493-2438-6. OCLC 55000526. [page needit]