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In a vacuum or empty space

См. также в других словарях:

  • Empty space — may refer to: * Outer space, especially the relatively empty regions of the universe outside the atmospheres of celestial bodies * Vacuum, a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than… …   Wikipedia

  • empty space — Ether E ther ([=e] th[ e]r), n. [L. aether, Gr. a iqh r, fr. a i qein to light up, kindle, burn, blaze; akin to Skr. idh, indh, and prob. to E. idle: cf. F. [ e]ther.] [Written also {[ae]ther}.] 1. (Physics) A medium of great elasticity and… …   The Collaborative International Dictionary of English

  • 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

  • vacuum — {{11}}vacuum (n.) 1540s, emptiness of space, from L. vacuum an empty space, void, noun use of neuter of vacuus empty, related to vacare be empty (see VAIN (Cf. vain)). Properly a loan translation of Gk. xenon, lit. that which is empty. Meaning a… …   Etymology dictionary

  • vacuum — [vak′yo͞om, vak′yo͞o əm] n. pl. vacuums or vacua [vak′yo͞o ə] [L, neut. sing. of vacuus, empty] 1. a space with nothing at all in it; completely empty space 2. a) an enclosed space, as that inside a vacuum tube, out of which most of the air or… …   English World dictionary

  • empty — adj 1 Empty, vacant, blank, void, vacuous mean lacking the contents that could or should be present. Something is empty which has nothing in it; something is vacant which is without an occupant, incumbent, tenant, inmate, or the person or thing… …   New Dictionary of Synonyms

  • Vacuum state — In quantum field theory, the vacuum state (also called the vacuum) is the quantum state with the lowest possible energy. Generally, it contains no physical particles. The term zero point field is sometimes used as a synonym for the vacuum state… …   Wikipedia

  • Vacuum permittivity — This article is about the electric constant. For the analogous magnetic constant, see vacuum permeability. For the ordinal in mathematics ε0, see epsilon naught. The physical constant ε0, commonly called the vacuum permittivity, permittivity of… …   Wikipedia

  • vacuum — /ˈvækjum / (say vakyoohm) noun (plural vacuums or vacua /ˈvækjuə / (say vakyoohuh)) 1. a space entirely void of matter (perfect vacuum or complete vacuum). 2. an enclosed space from which air (or other gas) has been removed, as by an air pump… …  

  • vacuum — An empty space, one practically exhausted of air or gas. [L. ntr. of vacuus, empty] * * * vac·u·um vak (.)yüm, yu̇ əm, yəm n, pl vac·u·ums or vac·ua yə wə 1) emptiness of space 2 a) a space absolutely devoid of matter b) a space partially… …   Medical dictionary

  • vacuum — /vak yoohm, yooh euhm, yeuhm/, n., pl. vacuums for 1, 2, 4 6, vacua /vak yooh euh/ for 1, 2, 4, 6; adj.; v. n. 1. a space entirely devoid of matter. 2. an enclosed space from which matter, esp. air, has been partially removed so that the matter… …   Universalium

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