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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.
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 ...
2004: First podcast, invented by Adam Curry and Dave Winer, is a program made available in digital format for download over the Internet and it usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. [544] [545] [546] 2005: YouTube, the first popular video-streaming site, was founded
For a jump from standing, one foot is positioned forward and one foot back. The weights are swung up and down until the jumper jumps in conjunction with an upswing. The long jump could also be performed without weights, and with a running start. [8] Vertical jumps as high as possible.
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]
An ancient Greece vase from 600 BC depicting a running contest An early model of hurdling at the Detroit Athletic Club in 1888 Panathenaic Stadium in Athens, one of the first modern track and field stadiums American athlete Jim Thorpe lost his Olympic medals after taking expense money prior to the 1912 Summer Olympics for playing baseball, a violation of Olympic amateurism rules.
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 ...
1877 – Vacuum brakes are invented in the United States. 1879 – First electric railway demonstrated at the Berlin Trades Fair. 1881 – First public electric tram line, the Gross-Lichterfelde Tramway, opened in Berlin, Germany. 1881 – One of the first railway lines in the Middle East was built between Tehran and Rayy in Iran.