There's always a photon striking back to the source Note: This is only a speculation. I don't claim that any of the following is scientifically proven. It's entirely based on my perception. Hence, I am open to any sort of suggestions, opinions and discussions. Introduction to Photons We all have heard about long years of debates over light being a wave, a particle or both and what events led to the discovery of photons. Put simply, photons are the fundamental particles of light, which has particle nature and uniquely, wave nature as well. Such unique properties of light allows light to undergo phenomena like reflection, refraction,diffraction and diffusion. Great scientists spent years of research over these particles into contributing towards quantum physics (further : quantum particles ). Photons are mostly of the visible portion of the electromagnetic spectrum. The deep and continuous study and research about these particles led to ...