Photoluminescence

Photoluminescence is a process where a material absorbs light energy and then re-emits it as light. When light hits the material, its atoms get excited to higher energy states. As these atoms return to their normal state, they release the extra energy as a new light signal. This phenomenon is used in technologies like glowing displays, LED lights, and medical imaging. The color and brightness of the emitted light depend on the material's properties and the energy of the absorbed light. Photoluminescence helps scientists understand how materials respond to light and find practical applications in various fields.