Science Made Simple: What Are Photons?

2 months ago
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What Are Photons?
Photons are the smallest possible particles of electromagnetic energy and therefore also the smallest possible particles of light. Photons can travel at the speed of light because they have no mass (thanks to relativity). Photons also have no charge.

Photons represent the entire spectrum of electromagnetic radiation. This includes radio waves, gamma-rays, and visible light.

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