lecture22 - Lecture 22 Lecture 22 James Clerk Maxwell...

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Unformatted text preview: Lecture 22 Lecture 22 James Clerk Maxwell (1831-1879) Physics 2102 Jonathan Dowling Maxwells equations Maxwells equations the dawn of the 20th century revolution in physics Gauss Law: Gauss Law: charges produce electric fields, field lines start and end in charges = S q dA E / e S S S S Gauss law for magnetism: Gauss law for magnetism: field lines are closed or, there are no magnetic monopoles = S dA B S S S S S S Amperes law: Amperes law: electric currents produce magnetic fields = C i ds B m C Faradays law: Faradays law: changing magnetic fields produce (induce) electric fields - = S C dA B dt d ds E All together: All together: = S q dA E / e = S dA B = C i ds B m - = S C dA B dt d ds E = S dA B = C ds B - = S C dA B dt d ds E No charges or currents No charges or currents : : very suspicious!...
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lecture22 - Lecture 22 Lecture 22 James Clerk Maxwell...

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