vacuum still
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Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … 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
Vacuum distillation — At atmospheric pressure, dimethyl sulfoxide boils at 189°C. Under a vacuum, it distills off into the connected receiver at only 70°C. Vacuum distillation is a method of distillation whereby the pressure above the liquid mixture to be distilled is … 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
Vacuum brake — The vacuum brake is a braking system used on trains. It was first introduced in the mid 1860s and a variant, the automatic vacuum brake system became almost universal in British train equipment, and in those countries influenced by British… … Wikipedia
Vacuum permeability — This article is about the magnetic constant. For the analogous electric constant, see vacuum permittivity. Vacuum permeability, permeability of free space, or magnetic constant is an ideal, (baseline) physical constant, which is the value of… … Wikipedia
Vacuum (band) — Infobox Musical artist Name = Vacuum Img capt = Img size = Landscape = Background = group or band Alias = Origin = Sweden Genre = Synthpop, electronic Years active = 1996 ndash;present Label = Associated acts = URL = Current members = Mattias… … 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 tube — 1. Also called, esp. Brit., vacuum valve. an electron tube from which almost all air or gas has been evacuated: formerly used extensively in radio and electronics. 2. a sealed glass tube with electrodes and a partial vacuum or a highly rarefied… … Universalium
still — I (New American Roget s College Thesaurus) adj. silent, quiet, hushed; calm, peaceful, tranquil; motionless, at rest, stationary. See silence.Ant., active, in motion, agitated. adv. yet, nevertheless. See compensation. II (Roget s IV) modif. 1.… … English dictionary for students