Episode 98: Electromagnetic Radiation
The Science of Everything Podcast
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What Is a Photon?
A photon is a quantum object, it doesn't really fit into the classical electromagnetism that I've mostly been describing so far. Photons are only incorporated into this later when certain effects were observed like the photoelectric effect which could not be explained by classical electromagnetic theory. Have a look at my quantum episodes if you want to know more about virtual photons.
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