Abstract
IT is generally supposed that the only significant reaction produced by absorption, in the tissues, of infra-red radiation—and it applies practically to the radiation from electric lamps—is to cause a rise in temperature of the tissues, there being no attendant chemical effect such as accompanies ultra-violet irradiation. Thus, whereas for ultra-violet irradiation the energy absorption in a single treatment is of the order of 10 calories, in the case of infra-red radiation it is more than 10,000 times larger.
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AULUCK, F., KOTHARI, D. Radiation and Sensation of Pain. Nature 164, 923 (1949). https://doi.org/10.1038/164923a0
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DOI: https://doi.org/10.1038/164923a0
