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Running is a gait with an aerial phase in which all feet are above the ground (though there are exceptions). [1] This is in contrast to walking , where one foot is always in contact with the ground, the legs are kept mostly straight, and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion. [ 2 ]
Leonhard Euler publishes Introductio in analysin infinitorum, an introduction to pure analytical mathematics, in Berlin. [3] He calculates the mathematical constant e to 23 digits [4] and presents Euler's formula. Euler's fifth paper on nautical topics, E137, is also written in this year but not published until 1750.
Robert Kay (1728–1802) was an English inventor, best known for designing a drop box to improve the capability of weaving looms. Robert Kay was born in 1728 to John Kay and Ann Holt. [1] He became a shuttlemaker in his native Bury, Lancashire, married in 1748 and had several children. His father emigrated to France in 1747 and was joined there ...
Wooden dandy horse (around 1820), a patent-infringing copy of the first two-wheeler Original Laufmaschine of 1817 made to measure.. The dandy horse, an English nickname for what was first called a Laufmaschine ("running machine" in German), then a vélocipède or draisienne (in French and then English), and then a pedestrian curricle or hobby-horse, [1] or swiftwalker, [2] is a human-powered ...
He also invented two four-wheeled human powered vehicles (1813/1814), the second of which he presented in Vienna to the congress carving up Europe after Napoleon's defeat. [6] In 1842, he developed a foot-driven human powered railway vehicle whose name " draisine " is used even today for railway handcars.
The optimal amount per week was 1 to 2.4 hours, the optimal frequency was less than or equal to 3 times per week and the optimal speed was "slow" or "average". [15] A recent meta-analysis on running/jogging and mortality, including more than 230,000 participants found that runners were at 27% lower risk of death than non-runners, during 5.5-35 ...
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6 September – Edmund Gibson, Bishop of London and scholar (born 1669) 12 September – Anne Bracegirdle, actress (born c.1671) 21 September – John Balguy, philosopher (born 1686) 26 October – Donald Cameron of Lochiel, exiled Jacobite clan chief (born 1700 in Scotland) 25 November – Isaac Watts, hymn writer (born 1674)