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The magnetic compass was first invented as a device for divination as early as the Chinese Han dynasty and Tang dynasty (since about 206 BC). [ 1 ] [ 3 ] [ 34 ] The compass was used in Song dynasty China by the military for navigational orienteering by 1040–44, [ 22 ] [ 35 ] [ 36 ] and was used for maritime navigation by 1111 to 1117.
It has a representation of the compass rose with its 32 compass points, just as on the face of the ship's compass. Eight concentric rings are inscribed on the compass rose. Each ring has one peg hole at each point of the compass. Eight pegs are attached to the centre of the compass rose with strings. [2] The bottom part is for recording speed.
Elmer Ambrose Sperry Sr. (October 12, 1860 – June 16, 1930) was an American inventor and entrepreneur, most famous for construction, two years after Hermann Anschütz-Kaempfe, of the gyrocompass and as founder of the Sperry Gyroscope Company. [3]
1960: The first functioning laser is invented by Theodore Maiman. 1963: The first electronic cigarette is created by Herbert A. Gilbert. Hon Lik is often credited with its invention as he developed the modern electronic cigarette and was the first to commercialize it. 1964: Shinkansen, the first high-speed rail commercial passenger service.
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Among the Four Great Inventions, the magnetic compass was first invented as a device for divination as early as the Chinese Han dynasty (since c. 206 BC), [1] [2] and later adopted for navigation by the Song dynasty Chinese during the 11th century. [3] [4] [5] The first usage of a compass recorded in Western Europe and the Islamic world ...
The actual term "orienteering" (Swedish: orientering) was first used in 1886 at the Swedish Military Academy Karlberg and meant the crossing of unknown land with the aid of a map and a compass. The competitive sport began when the first competition was held for Swedish military officers on 28 May 1893 at the yearly games of the Stockholm ...
Tracking what I do in a day has helped me achieve a better work-life balance. Using the point system has helped me achieve a better work-life balance.Tracking the sometimes-mundane tasks I do made ...