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The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.

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Do electromagnetic waves really slow down? [duplicate]

I have read somewhere that electromagnetic waves, when refracting only "appear" to slow down. That is when the wave goes thorough a material like glass it vibrates the electrons in the glass which gen …
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