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A Faraday cage is an enclosure that blocks some electromagnetic fields, named after scientist Michael Faraday who first constructed one in 1836. Learn how Faraday cages work, what they are made of, and how they are used in various applications.
Learn about the practice of reducing or redirecting electromagnetic fields with conductive or magnetic materials. Find out how RF shielding works, what materials are used, and what applications and examples exist.
Learn about the different types of cable shields, such as foil, braid, spiral and serve, and how they are used for electromagnetic shielding in signal and power cables. Find out how to ground the shield at both ends and avoid ground loops and shock hazards.
Electromotive force (emf) is an energy transfer to an electric circuit per unit of charge, measured in volts. It is not a physical force, but a concept that describes the work done on charges by devices or natural phenomena that convert other forms of energy into electrical energy.
Learn about the discovery, theory and applications of electromagnetic induction, the production of an electromotive force in a conductor by a changing magnetic field. Find out how Faraday's law, Lenz's law and Maxwell's equations describe this phenomenon.
Learn about the law of electromagnetism that predicts how a magnetic field interacts with an electric circuit to produce an emf. See the history, mathematical statement, proof, exceptions and applications of Faraday's law and its relation to relativity.
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