hard vacuum

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• Vacuum cementing — or vacuum welding is the natural process of solidifying small objects in a hard vacuum. The most notable example is dust on the surface of the moon.This effect was reported to be a problem with the first American and Soviet satellites, as small… …   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

• Hard suction hose — (alternatively, suction hose) is a specific type of fire hose used in drafting operations, when a fire engine draws water from a portable water tank, pool, or other static water source. Hard suction hose differs from standard fire hose in several …   Wikipedia

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

• Hard-disk platter — Hard disk with platter A hard disk platter (or disk) is a component of a hard disk drive: it is the circular disk on which the magnetic data is stored. The rigid nature of the platters in a hard drive is what gives them their name (as opposed to… …   Wikipedia

• Hard trance — originated in Germany in the early to mid 90 s and is one of the earliest forms of trance. It was one of the most common forms of Trance throughout the decade, characterized by strong kicks, with a very dry and heavy sound. Now it is much more… …   Wikipedia

• Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …   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 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 mattress — A vacuum mattress, or vacmat, is a medical device used for the immobilisation of patients, especially in case of a vertebra, pelvis or limb trauma (especially for femur trauma). It is also used for manual transportation of patients for short… …   Wikipedia

• Vacuum deposition — Not to be confused with Vacuum coating. Vacuum deposition is a family of processes used to deposit layers atom by atom or molecule by molecule at sub atmospheric pressure (vacuum) on a solid surface. The layers may be as thin as one atom to… …   Wikipedia