A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and …

Dec 24, 2025 · Considered among the subatomic particles, photons are bosons, having no electric charge or rest mass and one unit of spin; they are field particles that are thought to be …

May 24, 2025 · For centuries, scientists pondered whether light was a wave, a particle, or something even stranger. The answer, unveiled through the birth of quantum mechanics, is …

Dec 14, 2022 · Learn about photons in physics. Get the photon definition and fun facts about this interesting unit of light.

Photons represent the entire spectrum of electromagnetic radiation. This includes radio waves, gamma-rays, and visible light. Like many other particles governed by quantum mechanics, …

Discover what a photon is and how it relates to light, energy, and atomic transitions. Learn how photons carry energy in discrete packets and play a role in emission spectra.

Jun 10, 2025 · The idea that photons have specific, fixed energy levels sets them apart from other things in nature, like sound waves, which can have any amount of energy depending on how …