Tempest prognosticator (nonfiction): Difference between revisions
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* [https://en.wikipedia.org/wiki/Tempest_prognosticator Tempest prognosticator] @ Wikipedia | * [https://en.wikipedia.org/wiki/Tempest_prognosticator Tempest prognosticator (nonfiction)] @ Wikipedia | ||
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[[Category:Machines (nonfiction)]] | [[Category:Machines (nonfiction)]] | ||
Revision as of 15:49, 4 January 2017
The tempest prognosticator, also known as the leech barometer, is a 19th-century invention by George Merryweather in which leeches are used in a barometer.
The twelve leeches are kept in small bottles inside the device; when they become agitated by an approaching storm they attempt to climb out of the bottles and trigger a small hammer which strikes a bell.
The likelihood of a storm is indicated by the number of times the bell is struck.
In the News
Fiction cross-reference
Nonfiction cross-reference
External links:
- Tempest prognosticator (nonfiction) @ Wikipedia