I want to know why different colours appear when viewed with a different angle. Can anyone tell me why?
if it is only a LED light,i guess the different color display you cannot distinguish that,because it is very tiny. if you mean LED is a LED screen, that is because when the light pass through the surface,interference and reflection happened. if you mean LED display cannot see it from 2 edge of side,that is because total reflection,so now people begin to develop new LED display,there has a technology called "moth eyes".