Main Question or Discussion Point
What's the difference between white and silver color? If both the sufaces are reflecting all the light frequencies, why do they look different?
actually, i think that professional movie screens (as well as http://www.vutec.com/Products/Vutec_Fixed_Frame_Screens/SilverStar [Broken]) have very tiny reflective beads (perhaps called "micro lenses" in the patent) that are silvered and round. i'm having trouble finding technical info, but take a look at the previous patent citations in this patent.A polished metal, like a mirror, will reflect a ray in one particular direction. Angle of incidence equals angle of reflection. That's called mirror reflection or specular reflection. If you eye isn't at that special angle then you won't see the ray. But that's no good for a movie screen. You want the movie screen to reflect rays in all random directions, so some of them will hit everyone's eye. That's called diffuse reflection. So we paint a movie screen white.