Adding a note to Maxwells equations on Wikipedia that will likely be erased – something better is possible
https://en.wikipedia.org/wiki/Maxwell%27s_equations https://en.wikipedia.org/wiki/Magnetic_vector_potential https://en.wikipedia.org/wiki/Magnetic_scalar_potential https://en.wikipedia.org/wiki/Vector_calculus_identities Currently: Known as [[electromagnetic radiation]], these waves occur at various wavelengths to produce a [[Electromagnetic spectrum|spectrum]] of radiation from [[radio wave]]s to [[gamma ray]]s. Today there is theoretical research on waves with frequencies from quectoHertz (1E-30 Hertz) to QuettaHertz (1E30 Hertz). Practical measurements are roughly from nanoHertz (1E-9 Hertz) to YottaHertz
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