Hans KIMs 10 minutes reading / 05 --------------------------------------------- ULTRAVIOLET RADIATON and ITS PROTECTION --------------------------------------------------------------- EM radiation are inversely proportional, as indicated by the following relationship: - v=c / λ v=frequency of light c=speed of light (3*10^8 m/s) λ=wavelength of light The color of light is determined by its wavelength composition. The amount of energy in a quantum of light is given by the following relationship: - E=hv E=energy per quantum h=Plancks constant (6.626*10^37 J/Hz) v=frequency or - v=c / λ c=speed of light (3*10^8 m/s) λ=wavelength These relationships show that quanta of short wavelengths have more energy than do quanta of longer wavelengths. This is clinically important because high energy quanta produce more tissue damage when absorbed than do low-energy quanta. Because of its short wavelength, ultraviolet (UV) radiation contains much energy per quantum. The cornea absorbs much of the very short wavelength UVC radiation (
Posted on: Sat, 27 Dec 2014 01:35:08 +0000
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