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 …

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

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 …

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 …

Mar 10, 2022 · Photons are fundamental subatomic particles that carry the electromagnetic force — or, in simpler terms, they are light particles (and so much more). The photon is also the …

Jun 27, 2024 · Photons are elementary particles that act as the fundamental carriers of light and all other forms of electromagnetic radiation. They are unique because they have no mass and …

Jul 23, 2025 · Photons are fundamental particle of electromagnetic radiation, traveling at the speed of light. It is a quantum or discrete energy packet of electromagnetic energy.