Fosforüülumist

Fosforüülumist refers to the phenomenon of phosphorescence, a type of luminescence. When certain materials absorb energy, such as from ultraviolet light, they can emit this energy slowly as visible light over a period of time. This is distinct from fluorescence, where the light emission is immediate and stops once the excitation source is removed. Phosphorescent materials store energy in a metastable state, allowing for a prolonged glow. The color and duration of the phosphorescence depend on the specific chemical composition of the material. Common applications include glow-in-the-dark paints, watch dials, and safety signage. The process involves exciting electrons within the material to higher energy levels. When these electrons return to their ground state, they release energy in the form of photons. In phosphorescence, intersystem crossing occurs, where an electron transitions to a different spin state, making its return to the ground state slower and thus causing the delayed emission of light.