what do you mean of photon? and
Hello Dear,
The concept originated in 1905 by Albert Einstein's explanation of the photoelectric effect Photon, also called light quantum In physics, a photon is a bundle of electromagnetic energy. It is the basic unit that makes up all light. The photon is sometimes referred to as a "quantum" of electromagnetic energy. Photons are not thought to be made up of smaller particles. They are a basic unit of nature called an elementary particle.
Good Luck

![XAT Result 2026 Expected This Week [LIVE Updates]: Date, Time, Score vs Percentile & Top Colleges](https://cache.careers360.mobi/media/presets/50X50/article_images/2026/1/13/XAT-2026-Result-Date.jpg)



