What is Feynman's central idea in QED?
In quantum electrodynamics, the core idea is to look at particles, like electrons, exchanging photons. We represent these interactions with diagrams, called Feynman diagrams. These diagrams show the paths particles take and the interactions between them. It's a way to visualize and calculate probabilities of these events. It’s about understanding the fundamental rules of how light and electrons behave, even when it seems strange.
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