The Cool Property of Glass

When light goes through something, once it enters that space that contains the substance, it bends. This is an important thing that we take advantage of in fiber optic cables because there's a cool property of glass. The amount I see that light is bent when it enters a substance is sort of like always the same. It depends on the wavelength of light but just for our purposes, you can know that it's always theSame. So if you end up, if the light is shown at the glass at too sharp of an angle, then it can't bend it enough to actually go into it and so it bounces off. Even slowed down in glass very fast! Right? That's another thing