標題:
紅外線紫外線有咩分別?
發問:
紅外線紫外線有咩分別?
最佳解答:
The main difference btween infrared (紅內線) and ultraviolet (紫外線) is their wavelengths. Infrared radiation is electromagnetic waves with wavelength longer than that of visible light, typically from 780 nm (short infrared 短紅外線, or IRA)to 3 micro-metre (far infrared 遠紅外線 or IRC). Infrared radiation gives a sensation of heat. Ultraviolet, on the other hand, has wavelength shorter than that of visible light, typically from 400 nm to 200 nm. Ultraviolet radiation can be classified as UV-A, UV-B and UV-C, respectively with wavelengths from 400 nm - 320 nm, 320 nm - 280nm and 280 nm - 200 nm. Among the three groups of ultraviolet, UV-B and UV-C are hazardous. Fortunately, most of the UV-C from the sun is blocked off by the ozone layer in the upper atmosphere, thus protecting us from UV-C exposure.
其他解答:
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紫外線的波長較短,紅外線的波長較長. 2011-02-06 14:55:22 補充： 紫外線的頻率較高,紅外線的頻率較低.(希望幫到你)|||||紅外線是高温的物體 紫外線是太陽的其中一種光線4E350C6F8B48ECA2
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