Which type of electromagnetic wave is invisible, but close to visible light, with wavelengths about the size of a virus or a large molecule (1 raise x #10^-8# to 4 x #10^-7# meters)?

1 Answer
Dec 16, 2016

The range of wavelengths given define ultraviolet radiation.

Explanation:

Ultraviolet radiation is the stuff that's bad for your skin and eyes if you are exposed to the Sun without protection, and we would be much worse off if the ozone layer were not there to screen out the most harmful components. But this destructive power can also be used for disinfection. See https://en.m.wikipedia.org/wiki/Ultraviolet_germicidal_irradiation.