rayonnement infrarouge infrared radiation

Creator:	Sheila Hardie
Language pair:	французский => английский
Discipline:	-
Definition / notes:	Electromagnetic radiation having a wavelength longer than the longest visible wavelength but shorter than those in the microwave and radio ranges. www.genesismission.org/glossary.html Electromagnetic radiation lying in the wavelength interval from 0.7 µ to 1000 µ . Its lower limit is bounded by visible radiation, and its upper limit by microwave radiation. Most of the energy emitted by the Earth and its atmosphere is at infrared wavelength. Infrared radiation is generated almost entirely by large-scale intra-molecular processes. The tri-atomic gases, such as water vapor, carbon dioxide, and ozone, absorb infrared radiation and play important roles in the propagation of infrared radiation in the atmosphere. Abbreviated IR; also called "longwave radiation." www.globalchange.org/glossall/glossg-i.htm The portion of the electromagnetic spectrum with wavelengths ranging from longer than visible radiation, starting around 0.7 micrometers, to wavelengths shorter than those in the microwave portion of the spectrum. Satellite instruments typically measure infrared radiation between wavelengths of about 3 micrometers and 20 micrometers. www.ghcc.msfc.nasa.gov/irgrp/defs.html
URL:	http://www.ghcc.msfc.nasa.gov/irgrp/defs.html