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Do photons bump into each other?

Daniel and Kelly’s Extraordinary Universe

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Is There a Volume Between Nutrinos and the Table?

Everyone has this intuitive feeling that things touch each other. The only reason you perceive a volume is when there's a force between them. Contact doesn't really mean anything. All there is is force between particles, right? I think just what you're saying is that this idea that my finger can't occupy the same space as the table is really just kind of an illusion. That space isn't empty. It's filled with fields, or with virtual photons that are zooming around and keeping everything in its position.

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