File:Maxwell's flywheel model of induction.png

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Description	English: Maxwell's differential gear model, c. 1876, used for the demonstration of electrical induction. The two outer flywheels P and Q represent the primary and secondary circuits; an increase of the moment of inertia of the flywheel in the middle illustrates the effect of placing an iron core between the two circuits. (From James Clerk Maxwell, A Treatise on Electricity and Magnetism, 3rd ed., Oxford, 1 1892, Vol. II, p. 228.)
Date	1 January 1892
Source	James Clerk Maxwell, A Treatise on Electricity and Magnetism, 3rd ed., Oxford, 1 1892, Vol. 2, p. 228
Author	James Clerk Maxwell

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