I must admit, i don't know a huge amount on the subject, but i have a few theories.
Maybe the quantum/wave behaviour of light is a factor, don't take my word on it, but maybe the structure of glass is such that electromagnetic waves with the wavelength of visible light can pass through...
Hey,
First off, I am new, so if this is in the wrong place I am sorry.
I'm applying to university this year to study physics (hopefully going to Oxford or Imperial, though i don't think I am good enough for that). I've always wanted to lecture the subject at univeristy, I am incredibly...