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soft vacuum

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  • 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 aspiration — Background Abortion type Surgical First use China 1958 and UK 1967[1] Gestation 3 12 weeks Usage …   Wikipedia

  • Vacuum consolidation — (or vacuum preloading) is a soft soil improvement method that has been successfully used by geotechnical engineers and specialist sof ground improvement companies in countries such as China, Korea, Thailand and France for soil improvement or land …   Wikipedia

  • Soft X-ray emission spectroscopy — is an experimental technique for determining the electronic structure of materials. It is a form of X ray spectroscopy.UsesX ray emission spectroscopy (XES) provides a means of probing the partial occupied density of electronic states of a… …   Wikipedia

  • soft rays — soft rays, radiation of low penetrating power, such as is obtained from tubes of low vacuum …   Useful english dictionary

  • vacuum technology — Introduction       all processes and physical measurements carried out under conditions of below normal atmospheric pressure. A process or physical measurement is generally performed in a vacuum for one of the following reasons: (1) to remove the …   Universalium

  • Vacuum-anchor — In large scale oceanic civil engineering, vacuum anchors are ocean bottom fasteners used to anchor deep seas oil platforms (example: See Troll A Oil Platform) and other gravity base technology based structuresCite Sm a National Geographic Channel …   Wikipedia

  • vacuum forming —    A method of shaping a flat plastic sheet over a solid relief pattern (also called a male or positive mold). The plastic is heated until it is soft, and when a vacuum is created under the mold, the plastic is drawn down onto it, as if forming a …   Glossary of Art Terms

  • QCD vacuum — The QCD vacuum is the vacuum state of quantum chromodynamics (QCD). It is an example of a non perturbative vacuum state, characterized by many non vanishing condensates such as the gluon condensate or the quark condensate. These condensates… …   Wikipedia

  • 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

  • Ultra high vacuum — (UHV) is the vacuum regime characterised by pressures lower than about 10−7 pascal or 100 nanopascals ( 10−9 torr). UHV requires the use of special materials in creating the vacuum system, extreme cleanliness to maintain the vacuum system, and… …   Wikipedia

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