I tell my students “light travels as a wave and interacts as a particle.” Is this wrong for any obvious reasons?
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Replying to @InertialObservr @dcwych
but classically for waves there's no light-light interaction in the vacuum, right? without a source term maxwell's equations are linear, and therefore any superposition of solutions is a solution.
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yes, but that's at loop level and heavily suppressed as Ryan said
1:33 PM - 11 Mar 2020
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