That portion of the electromagnetic spectrum usually sensed as heat. Infrared wavelengths are longer than those of visible light, extending into the microwave frequencies. They are used therapeutically as heat, and also to warm food in restaurants
Infrared Rays -- adverse effects. : Safety with lasers and other optical sources : a comprehensive handbook / David Sliney and Myron Wolbarsht
1980
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Infrared Rays -- diagnostic use : Medical infrared imaging : principles and practices / edited by Mary Diakides, Joseph D. Bronzino, Donald R. Peterson
Infrared sources -- See Also the narrower term Masers
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Infrared sources : Mid-infrared coherent sources and applications / edited by Majid Ebrahim-Zadeh and Irina T. Sorokina
2008
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Infrared sources -- Congresses : Mid-infrared coherent sources and applications / edited by Majid Ebrahim-Zadeh and Irina T. Sorokina
2008
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Infrared Space Observatory. / http://id.loc.gov/authorities/names/n91094668 : ISO science legacy : a compact review of ISO major achievements / edited by Catherine Cesarsky and Alberto Salama
Spectrophotometry in the infrared region, usually for the purpose of chemical analysis through measurement of absorption spectra associated with rotational and vibrational energy levels of molecules. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
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infrared spectrophotometry. : Handbook of near-infrared analysis / edited by Donald A. Burns, Emil W. Ciurczak
Infrared technology -- Research : Seeing photons : progress and limits of visible and infrared sensor arrays / Committee on Developments in Detector Technologies, Standing Committee on Technology Insight--Gauge, Evaluate, and Review, Division on Engineering and Physical Sciences, National Research Council of the National Academies
Infrared telescopes -- Research : Thirty years of astronomical discovery with UKIRT : the scientific achievement of the United Kingdom infrared telescope / Andy Adamson, John Davies, Ian Robson, editors