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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. Merryweather referred ...
The approach of a line of thunderstorms could indicate the approach of a cold front. Cloud-free skies are indicative of fair weather for the near future. [69] A bar can indicate a coming tropical cyclone. The use of sky cover in weather prediction has led to various weather lore over the centuries. [10]
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A handful of families have taken children as young as 2 years old to Mount Everest Base Camp in recent years. ... The blood turned out to be coming from a leech on Cindy’s stomach. At another ...
The first storm will roll through the Midwest on Monday before fueling a blast of snow and ice all the way to Virginia and New England on Tuesday.
During a blood meal, a leech rhythmically contracts its muscles to draw blood from a host animal into the crop for storage. It can consume over five times its own weight in blood in one feeding. Once satiated, a leech detaches from its host. Hirudo verbana uses anticoagulants when it feeds, so its bite wounds continue bleeding for some time ...
Investigators from Canada's Transportation Safety Board are leading the probe to figure out why the CRJ900 aircraft operated by Delta Air Line's Endeavor Air subsidiary went belly up on Monday at ...