👉 Luminescence is a phenomenon in which light is emitted from a material when it absorbs or reflects certain wavelengths of light. This process can be observed through the emission of light, or it can also be caused by other factors such as heat, pressure, and chemical reactions. Luminescence is most commonly associated with materials that absorb light at specific frequencies (often near 405 nm) and then emit these same frequencies when they are emitted from the material. Examples include quartz crystal fib
