Image:Thompson mirror galvanometer.jpg
From Wikipedia, the free encyclopedia
Size of this preview: 306 × 599 pixels
Full resolution (526 × 1,030 pixels, file size: 34 KB, MIME type: image/jpeg)
| This is a file from the Wikimedia Commons. The description on its description page there is shown below.
|
[edit] Summary
| Description |
Drawing of a Thompson reflecting galvanometer from around 1900. Tom Perera's Scientific instrument colloction says it was Model 502, made by Elliot Bros., London. The vertical tube contains a fine silk fiber, which suspends a 1/2 in. mirror with small magnets on its back, seen in window, in the center of a coil of wire. A light beam reflected from the mirror lands on a scale and serves as a pointer. It has interchangeable coils of from 150 to 5000 ohms resistance. Alterations: removed caption, rotated image so it was vertical. |
|---|---|
| Source |
Downloaded from Norman H. Schneider (1913) Electrical Instruments and Testing, Spon & Chamberlain, New York, p.13 fig.8 on Google Books |
| Date |
1913 |
| Author |
Norman Hugh Schneider |
| Permission (Reusing this image) |
Public domain - published in USA before 1923 |
[edit] Licensing
 |
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1923. See this page for further explanation.
|
 |
|
Deutsch | English | Español | Français | Gaeilge | Galego | Italiano | Nederlands | 中文(简体) | +/- |
||
 |
This image might not be in the public domain outside of the United States (this especially applies in Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, and Switzerland). The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 12:56, 11 December 2007 | 526×1,030 (34 KB) | Chetvorno | ({{Information |Description=Drawing of a Thompson reflecting galvanometer |Source=Downloaded from [http://books.google.com/books?id=ZZ83AAAAMAAJ&pg=PA13&sig=v31U_QMaInWIfs6Q2g7aSCtkHrQ Norman H. Schneider (1913) ''Electrical Instruments and Testing'', Spon) |
