Slika:Faraday disk generator.jpg

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Povzetek

OpisFaraday disk generator.jpg	English: Drawing of Faraday disk, the first electromagnetic generator, invented by British scientist Michael Faraday in 1831. The copper disk (D) rotated between the poles of a horseshoe shaped magnet (A), creating a potential difference between the axis and rim due to Faraday's law of induction. If an electrical circuit such as a galvanometer was connected between the binding posts (B) and (B') the motion induced a radial flow of current in the disk, from the axle toward the edge. The current flows into the spring contact (m) sliding along the edge of the disk, out of binding post (B') through the external circuit to binding post (B) , and back into the disk through the axle. Turning it in the opposite direction reverses the direction of current. The caption also says that passing a current from a Bunsen cell (battery) through it would cause the disk to turn, making it function as an electric motor. The labeled parts are given in the caption as: (A) inducing magnet (D) induced disk (B) binding-screw for current entering or exiting axis of disk (B') binding-screw for current entering or exiting circumference of disk (m) rubber (sliding spring contact) for edge of disk. The caption describes it as 'Foucault's and Le Roux's apparatus' so this picture was not drawn from Faraday's original machine, but one owned by Faraday's contemporary French physicist Léon Foucault. The Faraday disk was an inefficient generator because counter-currents flowed back through regions of the disk outside the magnetic field. It was the first homopolar generator Alterations to image: cropped out caption and list of parts.
Datum	1884
Vir	Downloaded from Émile Alglave & J. Boulard (1884) The Electric Light: Its History, Production, and Applications, translated by T. O'Conor Sloan, D. Appleton & Co., New York, p.224, fig.142 on Google Books
Avtor	Émile Alglave
Dovoljenje (Nadaljnja uporaba datoteke)	Public domain - published in USA before 1923

Licenca

Public domain	Datoteka je v Združenih državah Amerike v javni domeni. To velja za ameriška dela, na katerih so avtorske pravice pretekle. Pogosto je za to razlog to, da je bilo delo prvič objavljeno pred 1. januarjem 1929. Podrobnejša razlaga je na razpolago na tej strani.	United States
	Zunaj Združenih držav Amerike slika ni nujno v javni domeni. To velja zlasti za države in območja, ki za ameriška dela ne uporabljajo pravilo krajšega roka, npr. za Kanado, Celinsko Kitajsko (ne za Hong Kong ali Macao), Nemčijo, Mehiko in Švico. Avtor in leto izdaje sta bistvena podatka in morata biti navedena. Podrobnosti so na razpolago na straneh Wikipedia:Public domain in Wikipedija:Avtorske pravice.

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	Datum in čas	Sličica	Velikost	Uporabnik	Komentar
trenutno	09:30, 26. september 2021		1.920 × 1.500 (1,31 MB)	Vort	better quality
	05:34, 22. december 2007		487 × 382 (35 KB)	Chetvorno	{{Information \|Description=Drawing of Faraday disk, the first electric generator, invented by British scientist Michael Faraday in 1831. \|Source=Downloaded from [http://books.google.com/books?id=zh5pbMMwARQC&pg=PA224 Émile Alglave & J. Boulard (1884) '