File:20. Валтенхофеново правило.ogv
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this JPG preview of this OGG file: 800 × 450 pixels. Other resolutions: 320 × 180 pixels | 640 × 360 pixels | 1,024 × 576 pixels | 1,280 × 720 pixels | 1,920 × 1,080 pixels.
Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 51 s, 1,920 × 1,080 pixels, 6.15 Mbps overall, file size: 37.2 MB)
File information
Structured data
Captions
Summary
[edit]Description20. Валтенхофеново правило.ogv |
Македонски: Кога меѓу половите на електромагнетот поминува полната масивна плоча, во неа се индуцираат вртложни струи. Согласно Ленцовото правило, тие струи формираат магнетно поле кое се противи на причината за неговото постоење, а тоа е движењето на плочата. Затоа таа запира. Ако на местото на масивната плоча се стави плоча која во вид на чешел, ефектот е послаб, затоа што индуцираните струи се послаби. Подготовка, изведба и објаснување: проф. Оливер Зајков. Институт за физика на Природно-математичкиот факултет во Скопје.
English: When massive metal plate oscillates between the poles of an electromagnet eddy currents are induced in the plate. According to the Lenz's rule, those currents create magnetic field, which opposes to the reason for their existence and that is the motion of the plate. That is why plate stops. If the massive plate is replaced with a comb-like plate, the effect is weaker, because eddy currents are weaker.
Prepared, performed and explained by Prof. Oliver Zajkov at the Physics Institute at the Ss. Cyril and Methodius University of Skopje, Macedonia.
Français : Démonstration des courants de Foucault.
L'oscillation d'une plaque métallique entre les deux pôles magnétiques d'un électroaimant engendre des courants de Foucault. Selon la loi de Lenz, ces courants créent un champ magnétique qui s'oppose à la source, qui est ici le mouvement de pendule. Cela a pour effet d'arrêter le mouvement. Si la plaque métallique est remplacée par une plaque en forme de peigne, les courants engendrés sont moindres, ce qui entraîne une force d'opposition moindre. Expérience réalisée et expliquée par le professeur Oliver Zajkov de l'Institut de physique de l'université Saints-Cyrille-et-Méthode de Skopje de Macédoine. Română: Demonstrație a pendulului lui Waltenhofen, precursor al frânelor electromagnetice. Formarea și suprimarea curenților turbionari este ilustrată aici cu ajutorul acestui pendul, o placă metalică ce oscilează între polii unukids experimenting clip arti electromagnet puternic. După ce este instalat un câmp magnetic suficient de puternic, pendulul este împiedicat să pătrundă în câmp.
Efectuat de prof. Oliver Zajkov de la Institutul de Fizică al Universității Sfinții Chiril și Metodiu din Skopje, Macedonia. |
Date | |
Source | Own work |
Author | Andrejdam |
This video was taken during Wikiexperiments 2015 set up by Shared Knowledge.
You can see all videos in category Physics Wikiexperiments. |
Licensing
[edit]I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:45, 31 December 2015 | 51 s, 1,920 × 1,080 (37.2 MB) | Andrejdam (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following 2 pages use this file:
- File:20. Валтенхореново правило.ogg (file redirect)
- Category:Eddy currents
Transcode status
Update transcode statusFile usage on other wikis
The following other wikis use this file:
- Usage on cs.wikipedia.org
- Usage on de.wikipedia.org
- Usage on de.wikibooks.org
- Usage on en.wikipedia.org
- Usage on eo.wikipedia.org
- Usage on et.wikipedia.org
- Usage on eu.wikipedia.org
- Usage on hu.wikipedia.org
- Usage on hy.wikipedia.org
- Usage on meta.wikimedia.org
- Usage on mk.wikipedia.org
- Usage on ro.wikipedia.org
- Usage on sk.wikipedia.org
- Usage on sv.wikipedia.org
- Usage on tr.wikipedia.org
- Usage on uk.wikipedia.org
- Usage on www.wikidata.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.
Software used | Lavf56.40.101 |
---|