File:Electrophorus.png
Original file (558 × 714 pixels, file size: 107 KB, MIME type: image/png)
Captions
Summary[edit]
DescriptionElectrophorus.png |
English: Drawing showing the operation of an electrophorus, a simple manual electrostatic generator invented in 1762 by Swedish professor Johan Carl Wilcke. The electrophorus consists of a flat "cake" of dielectric material such as pitch or wax, and a metal plate with an insulated handle that sits on top of it. The cake is first charged by rubbing it with fur (right) and the plate is set on top of it. The charge of the cake causes the charges in the metal plate to separate due to electrostatic induction; if the cake is charged positively, the top of the plate aquires a positive charge and the bottom acquires a negative charge. Then the top of the plate is grounded by touching it with a finger (shown). The positive charges on top of the plate drain off to ground. Then the plate with its remaining negative charge is lifted off the cake.
Français : Dessin montrant le fonctionnement d'un électrophore de Volta, un générateur électrostatique manuel simple inventé en 1762 par le professeur suédois Johan Carl Wilcke. L'électrophore se compose d'une « galette » plate en matériau diélectrique, comme la poix ou la cire, et d'une plaque métallique sur laquelle repose une poignée isolée. La galette est d'abord chargée en la frottant avec de la fourrure (à droite) et la plaque est posée dessus. La charge de la galette entraîne la séparation des charges dans la plaque métallique par induction électrostatique ; si la galette est chargée positivement, le haut de la plaque acquiert une charge positive et le bas une charge négative. Ensuite, le haut de la plaque est mis à la terre en le touchant avec un doigt (voir illustration). Les charges positives du dessus de l'assiette s'écoulent vers la terre. Ensuite, la plaque avec sa charge négative restante est soulevée de la galette. |
|||||||||||||||||||||||
Date | ||||||||||||||||||||||||
Source | Retrieved 2008-08-08 from Amédée Guillemin (1891) Electricity and Magnetism, revised by Sylvanus P. Thompson, MacMillan, New York, p.190, fig. 105 on Google Books | |||||||||||||||||||||||
Author |
creator QS:P170,Q2844663 |
|||||||||||||||||||||||
Permission (Reusing this file) |
Public domain - Guillemin died 1893 |
Licensing[edit]
Public domainPublic domainfalsefalse |
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. | |
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 11:39, 9 December 2011 | 558 × 714 (107 KB) | Chetvorno (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on ca.wikipedia.org
- Usage on da.wikipedia.org
- Usage on de.wikipedia.org
- Usage on en.wikipedia.org
- Usage on et.wikipedia.org
- Usage on no.wikipedia.org
- Usage on tr.wikipedia.org
- Usage on uk.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Horizontal resolution | 28.35 dpc |
---|---|
Vertical resolution | 28.35 dpc |
File change date and time | 10:09, 11 August 2008 |