Light (all the electromagnetic radiations) is something like raindrops-each little lump of light is called photon-and if the light is all one color, all the "rain-drops" are the same size.$_1$ The size makes photons of visible light and other waves different.
Credits: $_1$ Richard Feynman-QED, The strange Theory of light and Matter. * Data is subjected to modification without any loss of meaning up to my knowledge.