Not a homework question exactly, but I've been reading Feynman's QED and there's something I don't understand… When discussing partial reflection by two surfaces, Feyman says that different thicknesses of glass reflect differed % of the incident light, transmitting the rest, and that this % also varies depending on the wavelength of light. He therefore says that if light made up of a mixture of different wavelengths is shined on a sheet of glass, the colour of the reflected light will vary with the thickness of glass because different % of the different wavelengths are reflected at each thickness. However, when sunlight reflects off windows the reflection we see is the same colour as the original image that is reflected. So, for example, the reflection of a tree in a window will still have green leaves. But shouldn't different wavelengths of light reflect more and less than each other, so the colours should be distorted? There's definitely something I'm not getting here, any help would really be appreciated! Thanks!