File:BanjoPendulum.png
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Original file (531 × 702 pixels, file size: 21 KB, MIME type: image/png)
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| Description |
English: Diagram showing operation of temperature compensated "gridiron" pendulum, invented in 1726 by British clockmaker John Harrison. The pendulum uses rods of a high thermal expansion metal, zinc (yellow) to compensate for the expansion of rods of a low thermal expansion metal, iron (blue), so the overall pendulum doesn't change in length with temperature changes. Therefore the period of swing of the pendulum, and the rate of the clock, are constant with temperature.
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| Date | |
| Source | Own work |
| Author | Leonard G. |
| Permission (Reusing this file) |
Public Domain |
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:35, 29 May 2020 | | 531 × 702 (21 KB) | Ulfbastel | more general materials (Zn is unusual) |
| 23:57, 15 June 2016 |  | 531 × 702 (7 KB) | W like wiki | more clear (just blue and yellow) | |
| 23:53, 15 June 2016 |  | 531 × 702 (7 KB) | W like wiki | same blue ;) | |
| 05:26, 27 January 2008 |  | 531 × 702 (5 KB) | Leonard G. | Improved version of my image | |
| 05:11, 27 January 2008 |  | 531 × 702 (5 KB) | Leonard G. | ||
| 21:24, 26 January 2008 |  | 477 × 657 (5 KB) | Leonard G. | {{Information |Description=Temperature compensated "banjo" pendulum |Source=self-made |Date=January 26, 2008 |Author= Leonard G. |Permission=Public Domain |other_versions= }} A: general external appearance of pendulum B: schematic at |
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