I did little bit of solid state physics years ago, so I suspected it had something to do with the energy gap of the material. However if light is transmitted and not affected by the electrons in the material. How can refraction occur, for the path of a light ray to change (snell's law), the...
Bit of a silly question I know, but I have never been able to get answer which I'm happy with. I thought it might be due to the energy levels available to the electrons in the glass. Light is able to pass through the material, because the photons in the visible part of the spectrum don't have a...