Why Does Light REALLY Bend?

Jai Ho

Educational videos and stories

By Owner Name:The Science AsylumFrom YoutubeOctober 3, 2025

A lot of optical illusions can be explained by Fermat's principle of least time, but why does light obey it? On a fundamental level, it all comes down to quantum mechanics, specifically quantum optics, where we use the famous "Feynman path integral formulation" to explain light through photons.

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