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 …

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.

Dec 4, 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 the …

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 …

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 …

Light travels in individual bundles of energy called photons. In 1905, Einstein had an idea: maybe light travels in discrete bunches of energy. This helped explain the photoelectric effect, in …

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 …