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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 ]
The year 1748 in science and technology involved some significant events. ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; ...
Running, including running and jumping [40] Gymnastics including bridging, handstands, and acrobatics. [40] Vaulting [40] Swimming [40] Horse riding including for long distances [40] Co-operative calisthenics. A person stands on a sturdy plate, which is then lifted up by other people. A person sits in a chair which is connected to a pulley system.
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 ...
1757: First sextant made by John Bird (1709–1776), [230] adapting the principle of Hadley's octant. 1785: The lifeboat invented and patented by Lionel Lukin (1742–1834); William Wouldhave (1751–1821) made a rival claim, but he did not succeed with the practical application of his invention until 1789.
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1748 was a leap year starting on Monday of the Gregorian calendar and a leap year starting on Friday of the Julian calendar, the 1748th year of the Common Era (CE) and Anno Domini (AD) designations, the 748th year of the 2nd millennium, the 48th year of the 18th century, and the 9th year of the 1740s decade. As of the start of 1748, the ...
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.