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My understanding is the particle model of electromagnetism, the photon, really only shows up where the em field interacts with matter(electrons really), the em
by somat 2y ago
My understanding is the particle model of electromagnetism, the photon, really only shows up where the em field interacts with matter(electrons really), the em field itself is not quantized, or at least not quantized at the level of the photon. Not that this really matters(intentional), we can only interact with the em field as matter so that is what matters.
- alkonaut 2y ago> matter so that is what matters At first I thought this was a great pun. But then this is perhaps also the reason the word is actually "matters"? Where "matters" is what means something? What matters is what has an observable effect?