File:Bidston Observatory Hotbox.png
Bidston_Observatory_Hotbox.png (386 × 285 pixels, file size: 172 KB, MIME type: image/png)
Summary
The Bidston Observatory had a "fine chronometer room" thirty-six feet by twenty-one feet in which the two large hot boxes previously used at Waterloo Dock from 1861/2 were heated by gas from the cellar below. Each could hold one hundred chronometers which would be observed at temperatures between 50º to 85ºF throughout the year. The glazed lids of the boxes allowed observations to be made without requiring their removal. Temperatures would be changed weekly on a Saturday by 10º or 15ºF to show the change of rate to be expected when going from one climatic zone to another. This example is considerably smaller than the boxes installed at Bidston -- "this must be the first hot air box used at Waterloo Dock from c. 1846 which had space for ‘but few at a time’" --image from http://www.inbeat.org/wp-content/uploads/2020/07/Part-2-Getting-the-right-time.pdf [[Category:Grey Literature]
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:05, 17 April 2022 | | 386 × 285 (172 KB) | CritterCompiler (talk | contribs) | The Bidston Observatory had a fine chronometer room thirty-six feet by twenty-one feet in which the two large hot boxes previously used at Waterloo Dock from 1861/2 were heated by gas from the cellar below. Each could hold one hundred chronometers which would be observed at temperatures between 50º to 85ºF throughout the year. The glazed lids of the boxes allowed observations to be made without requiring their removal. Temperatures would be changed weekly on a Saturday by 10º or 15ºF to show... |
You cannot overwrite this file.
File usage
There are no pages that use this file.
