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单词 infrared ray
释义

infrared ray


Thesaurus
Noun1.infrared ray - a ray of infrared radiationinfrared ray - a ray of infrared radiation; produces a thermal effect (as from an infrared lamp)heat ray - a ray that produces a thermal effect
EncyclopediaSeeinfrared

infrared ray


in·fra·red (IR, ir),

(in-fră-red'), That portion of the electromagnetic spectrum with wavelengths between 730 and 1000 nm.

infrared ray

An invisible heat ray from beyond the red end of the spectrum. Infrared wavelengths range from 7700 angstrom units (A.U.) to 1 mm. Long-wave infrared rays (15,000 to 150,000 A.U.) are emitted by all heated bodies and exclusively by bodies of low temperature such as hot water bottles and electric heating pads; short-wave infrared rays (7,200 to 15,000 A.U.) are emitted by all incandescent heaters. The sun, electric arcs, incandescent globes, and so-called infrared burners are sources of infrared rays.

Uses

Infrared ray energy is transformed into heat in a superficial layer of the tissues. It is used therapeutically to stimulate local and general circulation and to relieve pain. The infrared thermograph is useful in studying the heat of tissues. See: radiation; thermography

See also: ray

infrared ray


Related to infrared ray: Ultraviolet ray
  • noun

Words related to infrared ray

noun a ray of infrared radiation

Related Words

  • heat ray
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更新时间:2024/12/23 21:21:20