Article
Article
Heat radiation
Article By:
Sell, Heinz G. Metals Development Section, Westinghouse Lamp Divisions, Bloomfield, New Jersey.
Walsh, Peter J. Department of Physics, Fairleigh Dickinson University, Teaneck, New Jersey.
Last reviewed:March 2019
DOI:https://doi.org/10.1036/1097-8542.311000
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- Heat radiation, published January 2014:Download PDF
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The energy radiated by solids, liquids, and gases as a result of their temperature. Radiation is one of the three basic methods of heat transfer, the other two methods being conduction and convection. Heat radiation is conveyed in the form of electromagnetic waves and covers the entire electromagnetic spectrum, extending from radio waves through infrared, visible, ultraviolet, x-rays, and gamma-rays. From most hot bodies on Earth, this radiant energy lies largely in the spectrum's infrared region (Fig. 1). See also: Heat conduction; Heat convection; Electromagnetic radiation; Heat; Heat transfer; Infrared radiation
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