Faraday discovered in 1831 that changing magnetic fields generate electric currents.
Indeed, one of my favorite duos of all time in the presence of no sources! These two equations tell us precisely that a time changing B field induces an E field and vice versapic.twitter.com/Qu2m9Ff3Ys
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I love that in vacuum, Maxwells equations are perfectly symmetric. With sources/in materials, this symmetry is brutally broken, unless you introduce magnetic monopoles, then they are perfectly symmetric again.
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me too.. still my favorite set of equations
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The better thing is in dF=0 and d*F=0 .
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