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by dexwiz 914 days ago
Orbital shapes and energies influence how light interacts with a material. Yes, once you get to QED, it’s simple. Before that is a whole bunch of layers of QFT to determine where the electrons are, and their energy. From that, there are many emergent behaviors.

Also QED is still a model. If you want to simulate every photon action, might as well build a universe.