- thermal emissivity
- степень (коэффициент) теплового излучения
Большой англо-русский и русско-английский словарь. 2001.
thermal emissivity
Смотреть что такое "thermal emissivity" в других словарях:
Thermal emittance — The thermal emittance (or thermal emissivity) of a material refers to its ability to release absorbed heat. It is usually expressed as a number between 0 and 1 and it is the ratio of the energy emitted from a surface to the energy emitted by a… … Wikipedia
Thermal radiation — is electromagnetic radiation emitted from the surface of an object which is due to the object s temperature. Infrared radiation from a common household radiator or electric heater is an example of thermal radiation, as is the light emitted by a… … Wikipedia
Emissivity — The emissivity of a material (usually written ε or e) is the relative ability of its surface to emit energy by radiation. It is the ratio of energy radiated by a particular material to energy radiated by a black body at the same temperature. A… … Wikipedia
Thermal insulation — The term thermal insulation can refer to materials used to reduce the rate of heat transfer, or the methods and processes used to reduce heat transfer.Heat energy can be transferred by conduction, convection, radiation or when undergoing a phase… … Wikipedia
Thermal Emission Imaging System — The Thermal Emission Imaging System (THEMIS) is a camera on board the 2001 Mars Odyssey orbiter. It images Mars in the visible and infrared parts of the electromagnetic spectrum in order to determine the thermal properties of the surface and to… … Wikipedia
Thermal management of high power LED — With the coming of energy saving era, high power light emitting diodes (LEDs) are promising to replace other technologies such as incandescent and fluorescent bulbs in signaling, solid state lighting, and vehicle headlight applications due to… … Wikipedia
Kirchhoff's law of thermal radiation — See also Kirchhoff s laws for other laws named after Kirchhoff .In thermodynamics, Kirchhoff s law of thermal radiation, or Kirchhoff s law for short, is a general statement equating emission and absorption in heated objects, proposed by Gustav… … Wikipedia
Infrared and thermal testing — is one of many Nondestructive testing techniques designated by the American Society of Nondestructive Testing (ASNT) [Jackson, C.N. and C.N. Sherlock, 1998, Nondestructive Testing Handbook: Leak Testing, page 519, Library of Congress Cataloging… … Wikipedia
surface emissivity — the relative emissive power of a body compared to that of an ideal blackbody. In other words, the fraction of thermal radiation emitted compared to the amount emitted if the body were a blackbody. By definition, a blackbody has a surface… … Mechanics glossary
Low-emissivity — (Low E) coatings are microscopically thin, virtually invisible, metal or metallic oxide layers deposited on a window or skylight glazing surface primarily to reduce the U factor by suppressing radiative heat flow. The principal mechanism of heat… … Wikipedia
Advanced Spaceborne Thermal Emission and Reflection Radiometer — ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is one of five remote sensory devices on board the Terra satellite launched into Earth orbit by NASA in 1999. The instrument has been collecting data since February 2000.ASTER … Wikipedia
