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nounelectromagnetic radiation with wavelengths longer than visible light but shorter than radio wavestype of:
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"they could sense radiation in the infrared"nounthe infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
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"infrared radiation" "infrared photography"adjectivehaving or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end
Definition that contains infrared
- microwave a short electromagnetic wave (longer than infrared but shorter than radio waves); used for radar and microwave ovens and for transmitting telephone, facsimile, video and data
- infrared the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
- stinger a portable low altitude surface-to-air missile system using infrared guidance and an impact fuse; fired from the shoulder
- sidewinder air-to-air missile with infrared homing device
- herschel English astronomer (born in Germany) who discovered infrared light and who catalogued the stars and discovered the planet Uranus (1738-1822)
- thermograph medical instrument that uses an infrared camera to reveal temperature variations on the surface of the body
- heat lamp electric heater consisting of a high-power incandescent lamp that emits infrared radiation
- radio frequency an electromagnetic wave frequency between audio and infrared
- astronomy satellite a satellite equipped with a telescope to observe infrared radiation
- infrared ray a ray of infrared radiation; produces a thermal effect (as from an infrared lamp)