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Results tagged with electromagnetic-radiation
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user 139338
Propagating solutions to Maxwell’s equations in classical electromagnetism and real photons in quantum electrodynamics. A superset of thermal-radiation.
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Is the total amount of light today the same as it was 13.8 billion years ago?
Photons are far from conserved. Firstly, any particle can decay, or be created or annihilated during inelastic collision. For example, $$\pi^0\rightarrow2\gamma.$$ Secondly, even in elastic collision, …
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