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The Faraday paradox or Faraday's paradox is any experiment in which Michael Faraday's law of electromagnetic induction appears to predict an incorrect result. The paradoxes fall into two classes: Faraday's law appears to predict that there will be zero electromotive force (EMF) but there is a non-zero EMF.
In his study on the subject, Carl Hering concluded in 1908 that the usual statement of Faraday's Law (at the turn of the century) was imperfect and that it required to be modified in order to become universal. [1] Since then, Hering's paradox has been used repeatedly in physics didactics to demonstrate the application of Faraday's Law of ...
That means the paradox of different descriptions may be only semantic. A description that uses scalar and vector potentials φ and A instead of B and E avoids the semantical trap. A Lorentz-invariant four vector A α = (φ / c, A) replaces E and B [5] and provides a frame-independent description (albeit less visceral than the E– B ...
Download QR code; Print/export ... Paradox of free choice: ... Faraday paradox: An apparent violation of Faraday's law of electromagnetic induction.
The primed frame is moving relative to the unprimed frame at velocity v. Fields defined in the primed frame are indicated by primes, and fields defined in the unprimed frame lack primes. The field components parallel to the velocity v are denoted by E ∥ and B ∥ while the field components perpendicular to v are denoted as E and B .
In three dimensions, the derivative has a special structure allowing the introduction of a cross product: = + = + from which it is easily seen that Gauss's law is the scalar part, the Ampère–Maxwell law is the vector part, Faraday's law is the pseudovector part, and Gauss's law for magnetism is the pseudoscalar part of the equation.
The Faraday paradox was a once inexplicable aspect of the reaction between nitric acid and steel. Around 1830, the English scientist Michael Faraday found that diluted nitric acid would attack steel, but concentrated nitric acid would not. [1] The attempt to explain this discovery led to advances in electrochemistry.
Faraday can be seen as an "electric boy" because of his electrical discoveries. Also, "The Electric Boy" was an experimental demonstration of static electricity popular in the eighteenth-century. A young man was suspended from the ceiling using insulating silk cords, and electrified, causing his body to act as a magnet .