I know this has been discussed to death and I acknowledge the fact that there truly is no conclusive answer. However, I have to do my best to outline that light is indeed a particle through its properties of reflection. So far, I've simply come up with the fact that laws of reflection follows laws of motion. Any help regarding other sources of light behaving as a partcle through reflection is appreciated. Also, what properties or experiments decidely supports the corpuscular theory (I know only about Photoelectric Effect). Furthermore, how does light behave as a wave through the following: Propagation, Refraction, Partial Reflection/Partial Refraction, Diffraction and Dispersion. Thanks.