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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 ...
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.
An example of 500 mbar geopotential height and absolute vorticity prediction from a numerical weather prediction model Main article: Numerical weather prediction The basic idea of numerical weather prediction is to sample the state of the fluid at a given time and use the equations of fluid dynamics and thermodynamics to estimate the state of ...
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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 ...
Leeches of this genus parasitize birds and are sometimes called duck leeches, although their hosts are not limited to ducks. The Theromyzon species tend to feed in the nasal cavities of waterbirds in general, from ducks to penguins. As parasites of birds, and in many cases migratory waterfowl, these leeches typically have a broad distribution ...
If you came of age with the 1986 coming-of-age classic Stand by Me, chances are you long thought twice before taking a dip in any forest ponds.. In perhaps the film’s most famous scene, dead ...
climateprediction.net (CPDN) is a volunteer computing project to investigate and reduce uncertainties in climate modelling.It aims to do this by running hundreds of thousands of different models (a large climate ensemble) using the donated idle time of ordinary personal computers, thereby leading to a better understanding of how models are affected by small changes in the many parameters known ...