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heat of ablation

См. также в других словарях:

  • Ablation — is defined as the removal of material from the surface of an object by vaporization, chipping, or other erosive processes. The term occurs in space physics associated with atmospheric reentry, in glaciology, medicine and passive fire… …   Wikipedia

  • ablation shield — ablation shield, a type of heat shield that uses up heat by melting and vaporizing. The air stream carries the molten particles and the hot gas vapor away from the spacecraft …   Useful english dictionary

  • Heat Shield Rock — photographié par le rover Opportunity Heat Shield Rock est une météorite ferreuse découverte sur Mars par le rover Opportunity de la mission Mars Exploration Rover le 6 janvier 2005. La météorite a été officiellement nommé Meridiani Planum par la …   Wikipédia en Français

  • heat shield — noun a protective covering that protects a spacecraft from overheating on reentry • Hypernyms: ↑protective covering, ↑protective cover, ↑protection • Part Holonyms: ↑spacecraft, ↑ballistic capsule, ↑space vehicle …   Useful english dictionary

  • Heat Shield Rock — MarsGeo name=Heat Shield Rock caption=Heat shield, with Heat Shield Rock just above and to the left in the background (click to enlarge) type=Rock latitude=1.9 N or S=S longitude=354.5 E or W=EHeat Shield Rock is a basketball sized iron nickel… …   Wikipedia

  • ablation — In medicine, the removal or destruction of a body part or tissue or its function. Ablation may be performed by surgery, hormones, drugs, radiofrequency, heat, or other methods …   English dictionary of cancer terms

  • heat shield — Aerospace. a coating or structure that surrounds part of the nose cone or other vulnerable surfaces of a spacecraft and, by heat absorption or ablation, protects them from excessive heating during reentry. [1955 60] * * * …   Universalium

  • ablation — ab•la•tion [[t]æˈbleɪ ʃən[/t]] n. 1) the act or process of ablating 2) srg the removal of organs, abnormal growths, or harmful substances from the body by mechanical means, as by surgery 3) ars the erosion of the protective outer surface… …   From formal English to slang

  • Laser ablation — is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates. At high laser flux, the… …   Wikipedia

  • photothermal ablation — laser ablation of tissue in which light is absorbed by the tissue and converted to heat, resulting in coagulation, necrosis, and vaporization …   Medical dictionary

  • radiofrequency ablation — radiofrequency catheter ablation. the destruction of precisely controlled areas of tissue by heat induced by low frequency electromagnetic waves, used for a variety of purposes, including the treatment of arrhythmias and the reduction of tumors …   Medical dictionary

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