Physics
Photon Emission and Absorption
Quick fact
A single photon can be emitted or absorbed by an atom during a quantum leap between energy levels.
Why this is interesting
Have you ever wondered why objects glow when heated or why plants appear green? It all starts with how atoms interact with light.
Read the full explanation
Understanding Photon Emission and Absorption
When an electron in an atom jumps from a higher to a lower energy level, it releases a photon. Conversely, when it moves up, it absorbs one. This process is central to how light behaves and interacts with matter.
A deeper explanation
Photon emission and absorption occur through quantum transitions between atomic energy levels. These processes are governed by the principles of quantum electrodynamics, where photons act as carriers of electromagnetic interactions. Understanding this mechanism is key to explaining phenomena like fluorescence, thermal radiation, and even how solar cells work.