English contemporary dictionary. 2014.
Vacuums — Vacuum Vac u*um, n.; pl. E. {Vacuums}, L. {Vacua}. [L., fr. vacuus empty. See {Vacuous}.] 1. (Physics) A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the… … The Collaborative International Dictionary of English
Central vacuum cleaner — The power unit of a typical central vacuum cleaner for residential use A central vacuum cleaner (also known as built in or ducted) is a type of vacuum cleaner appliance, installed into a building as a semi permanent fixture. Central vacuum… … Wikipedia
Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… … Wikipedia
Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner … Wikipedia
Contributors to general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts … Wikipedia
Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… … Wikipedia
The Hoover Company — Infobox Company company name = Hoover company company type = Division genre = Home Care foundation = 1907 founder = James Murray Spangler location city = location country = location = Glenwillow, Ohio origins = key people = area served = industry … Wikipedia
Список известных учёных-релятивистов — Это служебный список статей, созданный для координации работ по развитию темы. Данное предупреждение не ус … Википедия
Известные учёные-релятивисты — Служебный список статей, созданный для координации работ по развитию темы. Данное предупреждение не устанавл … Википедия
Vacuum solution (general relativity) — In general relativity, a vacuum solution is a Lorentzian manifold whose Einstein tensor vanishes identically. According to the Einstein field equation, this means that the stress energy tensor also vanishes identically, so that no matter or non… … Wikipedia
