Faradays induction coil, 1831
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Faradays induction coil, 1831
Faradays induction coil. This is an iron ring, around which are wounds two insulated coils of copper wire on each side. It was made by Michael Faraday in 1831. Passing a current through one wire induces a voltage in the other by a process called mutual inductance. This is because the initial current creates a magnetic field in the ring. A change in magnetic field within the second coil creates a transient current - a burst when the initial current is switched on and another when it is switched off. This coil is now on display at the Royal Institution, London
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Media ID 9203937
© ROYAL INSTITUTION OF GREAT BRITAIN / SCIENCE PHOTO LIBRARY
Circuit Circular Coil Demonstration Electric Electrical Electricity Electromagnetic Electromagnetism Energy Exhibit Faraday Induction Iron London Michael Museum Mutual Nineteenth Ring Royal Institution 1821 Cutouts
EDITORS COMMENTS
This print showcases Faraday's induction coil, a remarkable invention by the renowned scientist Michael Faraday in 1831. The image captures an iron ring with two insulated coils of copper wire wound around it on each side. This ingenious creation demonstrates the concept of mutual inductance, where passing a current through one wire induces a voltage in the other. The significance lies in how this coil operates. As an initial current flows through one wire, it generates a magnetic field within the ring. Any change in this magnetic field within the second coil triggers a transient current - an energetic burst when the initial current is switched on and another when it is turned off. Displayed against a pristine white background at London's Royal Institution, this model represents an important milestone in electrical science during the nineteenth century. It symbolizes Faraday's groundbreaking contributions to electromagnetism and his pivotal role in shaping our understanding of energy and electricity. With its historical value and scientific relevance, this photograph serves as both an educational tool and a testament to human ingenuity. Preserved within the walls of this prestigious museum, Faraday's induction coil continues to inspire generations with its intricate design and enduring legacy.
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