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What if every electron in the universe was all the same exact particle?

January 17, 2012
by physicsguy

http://io9.com/5876966/what-if-every-electron-in-the-universe-was-all-the-same-exact-particle

This is an interesting idea many physics undergrads will come across. Based on observations, the central assumption cannot be true, but the insight it brings helped Feynman develop quantum electrodynamics, which in turn aided Hawking in dealing with some of the insanity surrounding black holes. Hawking radiation, in fact, becomes much more intuitive if positrons can be treated as electrons moving backward in time.

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