Joseph Henry, a professor at Albany Academy in New York was
independently making the same observations at the same time as Faraday.
When Henry got news of Faraday`s discoveries, he made no effort to claim
credit for his own work but often referred to Faraday`s discovery.
It was the change in the magnetic field which induced electricity
without a direct connection, not the value of the steady magnetic field
itself.
Slight correction: it is the change in the magnetic flux that gives
induced EMF. You can get an induced current from a constant
magnetic field if the circuit loop moves in or out of the field,
changing the flux throught the loop.
Tor
N4OGW
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