That Mo, what give out from illuminant is smooth, because what contain among them,have on the smooth scale of wavelengh lose by force, perhaps lack one part, behave various colour thereby.

• 那麽，从光源发出的光，由于其中所含波长的光的比例上有强弱，或者缺少一部分，从而表现成各种各样的色彩。