Definitions of faraday's disc

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Definition of 'faraday's disc'

The Standard Electrical Dictionary

1. faraday's disc
A disc of any metal, mounted so as to be susceptible of rotation in a magnetic field of force, with its axis parallel to the general direction of the lines of force. A spring bears against its periphery and another spring against its axle. When rotated, if the springs are connected by a conductor, a current is established through the circuit including the disc and conductor. The radius of the disc between the spring contacts represents a conductor cutting lines of force and generating a potential difference, producing a current. If a current is sent through the motionless wheel from centre to periphery it rotates, illustrating the doctrine of reversibility. As a motor it is called Barlow's or Sturgeon's Wheel. If the disc without connections is rapidly rotated it produces Foucault currents, q. v., within its mass, which resist its rotation and heat the disc.

'faraday's disc' - Nearby Entries
eye, electro-magnetic faraday's cube faraday's dark space faraday's disc faraday's net faraday's transformer faraday's voltameter

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