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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.

3 votes
2 answers
1k views

How many wavelengths does a single photon span?

It is common to see photons depicted as a sine wave with multiple peaks and troughs. Is that correct? I am familiar with the energy-wavelength and frequency-wavelength equations for a photon. But my u …
K. Kirilov's user avatar