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The Tempest Prognosticator 1951 Festival of Britain Replica Tempest Prognosticator. 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 ...
His best-known invention was the Tempest Prognosticator—a weather predicting device also called "The Leech Barometer". [2] It consists of twelve glass bottles containing leeches, which, when disturbed by the atmospheric conditions preceding a storm, climb upwards, triggering a small whalebone hammer which rings a bell.
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A spectacular year awaits, Taurus!According to Thomas' predictions, 2025 is going to bring forth many "surprises and fresh starts" your way. If the past few years have seemed like a whirlwind ...
Perhaps the best known work on tempestarii was an 815 AD piece called "On Hail and Thunder" by a bishop, Agobard of Lyon. Some describe it as a complaint of the irreligious beliefs of his flock, as villagers resented paying tithes to the church, but freely paid a form of insurance against storms to village tempestarii; but, it was also noted, whenever a supposed weathermaker failed to prevent ...