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first deffirent is in the frequency also
visible spectrum has very special behaviour
light have two behaviour sometimes it act as object and sometime act as a wave
Indeed the frequencies are different. But what about the propagation characteristics. Radio waves usually decay at a rate proportional to the squared distance in open areas and3rd or4th power of distance in built-up areas. But what about Visible Spectrum. How do they decay with distance?
It is the FREQUENCY SPECTRUM
it is the kind of electromaganatic waves which is used for communation.
It is the Frequency Spectrum
