Timeline for If photons are massless, how are they reflected and blocked by something that has mass? Shouldn't they pass right through any object?
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| Aug 13, 2023 at 16:26 | comment | added | Triatticus | The neutron might be neutral but it has a nonzero magnetic moment so it can interact with photons. It's just that it's much weaker than those of particles like protons and electrons. No need for high energy photons here either. | |
| Aug 13, 2023 at 14:36 | history | answered | Nadav Har'El | CC BY-SA 4.0 |