Finesentence mobile logo
Sign in Login / Register

Photon Meaning: Definition, Examples, and Translations

🔆
Add to dictionary

photon

[ˈfoʊtɒn ]

Definition

Context #1 | Noun

physics, particle

A photon is a quantum of electromagnetic radiation, which can be described as a particle of light. It is the fundamental particle that carries electromagnetic force, and it has no rest mass. Photons travel at the speed of light and are essential in numerous applications, from quantum mechanics to telecommunications.

Synonyms

electromagnetic radiation, light particle, quantum.

Examples of usage

  • Photons are emitted when an atom transitions from a higher energy state to a lower one.
  • The speed of photons in a vacuum is approximately 299,792 kilometers per second.
  • In optics, the behavior of photons can be studied using lasers.

Translations

To see the translation, please select a language from the options available.

Origin of 'photon'

The term 'photon' was coined in 1926 by American physicist Gilbert Lewis as part of his work in quantum theory. The word is derived from the Greek word 'phōs,' meaning 'light.' Initially, photons were theoretical constructs used to describe the particle nature of light, particularly in the context of the dual wave-particle nature that emerged from the work of physicists like Max Planck and Albert Einstein. The concept gained further importance in the development of quantum mechanics, where photons are seen as force carriers for electromagnetism. Over the decades, the study of photons has led to significant advances in both theoretical and applied physics, contributing to technologies such as lasers, fiber optics, and quantum computing.

Word Frequency Rank

Position #9,382 indicates this is an advanced-level word. While not essential for basic communication, it will enhance your ability to understand and create more nuanced content.