File:BanjoPendulum.png
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Size of this preview: 453 × 599 pixels. Other resolutions: 181 × 240 pixels | 531 × 702 pixels.
Original file (531 × 702 pixels, file size: 21 KB, MIME type: image/png)
| 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 |
|
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. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:35, 29 May 2020 | | 531 × 702 (21 KB) | wikimediacommons>Ulfbastel | more general materials (Zn is unusual) |
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