Thermal Radiation 04
Thermal Radiation 04 : (1) (Phys) Heat energy in the electromagnetic spectrum, ranging from ultraviolet, through visible light, to the far infrared frequencies, emitted by molecules of substances excited to thermal energies. See also: Emissivity; Heat Transfer; Radiation. (2) (Nucl Phys) Electromagnetic radiation emitted from the fireball produced by a nuclear explosion. Thirty-five percent of the total energy of a nuclear explosion is emitted in the form of thermal radiation, as light, ultraviolet, and infrared radiation
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