What is your familiarity with the terms infrared and ultraviolet? What uses and/or risks do they pose to humans?

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28-12-2016
Biology

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What is your familiarity with the terms infrared and ultraviolet? What uses and/or risks do they pose to humans?

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Аноним Аноним · Answer 1 · 2016-12-29T07:45:02+01:00

Infrared: (of electromagnetic radiation) having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves.Infrared radiation has a wavelength from about 800 nm to 1 mm, and is emitted particularly by heated objects.

Ultraviolet: (of electromagnetic radiation) having a wavelength shorter than that of the violet end of the visible spectrum but longer than that of X-rays.