👉 The junction between light and particles refers to the interaction where photons, which are the fundamental particles of light, encounter matter. This interaction can occur through various mechanisms, such as absorption, scattering, reflection, or emission. When light particles (photons) collide with atoms, molecules, or other particles, they can transfer their energy, leading to changes in the particles' states. For instance, absorption happens when a photon is taken up by an atom, exciting an electron to a higher energy level. Conversely, emission occurs when an excited particle releases a photon, returning to a lower energy state. These interactions are crucial in understanding phenomena like the colors we see, the behavior of solar cells, and the functioning of optical devices, as they govern how light interacts with and is manipulated by matter.
