- #1
touqra
- 287
- 0
Consider a situation where a friend have a red laser or a torchlight shining across the room. And you are standing at the side, perpendicular to the light beam. If light traverse in a straight line, why is that you can see the light shining across the room when you know that the light that comes out from the laser or the torchlight does not bend 90 degrees?