Faraday’s Disc
To demonstrate conversion of mechanical energy into electrical energy. A copper disc with a turning handle rotates between two poles of a horse shoe magnet. On base with two terminals, one of which is connected to a pillar supporting the disc and the other to a brush bearing on edge of the disc.
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An elegant method for displaying the shape of magnetic fields without using iron filings. Ideal for student investigations or for demonstration using an overhead projector. The transparent plate is comprised of a matrix of small circular chambers. Each chamber contains an iron rod and functions independently as a plotting compass.
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