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Propagating solutions to Maxwell’s equations in classical electromagnetism and real photons in quantum electrodynamics. A superset of thermal-radiation.
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votes
Electromagnetic waves and their extremes
When it comes to gravitational waves, no we have not determined them to be EM waves. Although we can't completely rule it out. For example, there is a theory that reconciles EM force with weak nuclear …
3
votes
Do radio waves travel around the Earth or through it?
No, radio signals do not go through the Earth. Not for any one reason, but for a series of reasons, many of which have been talked about here so I will make a comprehensive list, and there might be ev …