A solenoid is a type of electromagnet made from a helical coil of wire whose length is substantially greater than its diameter. Passing an electric current through the coil produces a controlled, largely uniform magnetic field within the enclosed volume of space. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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Source Solenoid (Wikipedia)
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1. Solenoid (Wikipedia)
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A solenoid () is a type of electromagnet formed by a helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic field.
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André-Marie Ampère coined the term solenoid in 1823, having conceived of the device in 1820.
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