When does light act as a particle and when does it act as a wave?
light is both a wave and a particle, at once. according to my chemistry teacher light acts as a wave or a light depending on what type of experiment you do. when it comes to diffraction gratings light is a wave, but when it comes to the photo electric effect light is a particle
I am going to pop some popcorn because I am looking forward to seeing the answers you get. This is not a simple question and I believe still has some physicists stumped. If you are really curious, I would look up the double slit experiment on youtube.
As a particle in the photoelectric effect. As a wave in the diffraction and slit experiments.
That is called Quantum Mechanics when a particle or electron acts like both a wave and a particle. Sorry that is the best answer I can give.
