rim magnet
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Magic wheel — The magic wheel, or magnetic wheel is a wheel that continues to spin for a long time after being started, and is one of the earliest examples of an attempt at a perpetual motion machine. This device was invented in medieval Bavaria. It looked… … Wikipedia
Faraday paradox — This article describes the Faraday paradox in electromagnetism. There is a different Faraday paradox in electrochemistry: see Faraday paradox (electrochemistry). The Faraday paradox (or Faraday s paradox) is an experiment that illustrates Michael … Wikipedia
Faraday's law of induction — For the relationship between a time varying magnetic field and an induced electric field, see Maxwell s equations. Electromagnetism … Wikipedia
Homopolar generator — A homopolar generator is a DC electrical generator comprising an electrically conductive disc rotating in a plane perpendicular to a uniform static magnetic field. A potential difference is created between the center of the disc and the rim, the… … Wikipedia
Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… … Universalium
Barlow's Wheel — is the name given to an early demonstration of a homopolar motor, designed and built by English mathematician and physicist, Peter Barlow in 1822. An electric current passes through the hub of the wheel to a mercury contact on the rim; this is… … Wikipedia
Faraday, Michael — born Sept. 22, 1791, Newington, Surrey, Eng. died Aug. 25, 1867, Hampton Court English physicist and chemist. Son of a blacksmith, he received only a basic education in a church Sunday school, but he went to work as an assistant to Humphry Davy,… … Universalium
Contenu:Australie — Projet:Australie/Liste des articles Liste mise à jour régulièrement par MyBot (d · c · b) à partir des articles liés au bandeau {{Portail Australie}} Modifications récentes des articles ayant le bandeau de ce portail… … Wikipédia en Français
Eddy current — This article is about the electrical phenomenon. For the Ted McKeever comic, see Eddy Current (comics). Electromagnetism … Wikipedia
watch — /woch/, v.i. 1. to be alertly on the lookout, look attentively, or observe, as to see what comes, is done, or happens: to watch while an experiment is performed. 2. to look or wait attentively and expectantly (usually fol. by for): to watch for a … Universalium
Perpetual motion — For other uses, see Perpetual motion (disambiguation). Robert Fludd s 1618 water screw perpetual motion machine from a 1660 wood engraving. This device is widely credited as the first recorded attempt to describe such a device in order to produce … Wikipedia
