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The magnetic compass is an old Chinese invention which has become a very modern invention. ... The magnetic compass is an old Chinese invention, probably first made in China during the Qin dynasty (221-206 B.C.). Chinese fortune tellers used lodestones (a mineral composed of an iron oxide which aligns itself in a north...
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inventors.about.com/od/cstartinventions/a/Compass.htm
inventors.about.com/od/cstartinventions/a/Compass.htm
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A much more reliable guide for finding direction is a magnetic compass, which works at all times and in most places. When a piece of magnetized iron is placed on a splinter of wood and floated in a bowl of water, the wood will swing until the iron is pointing north and south.
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www.navis.gr/navaids/compass.htm
www.navis.gr/navaids/compass.htm
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The magnetic compass was one of the first flight instruments. Even today, it is frequently the only direction-indicating instrument found in aircraft equipped only for VFR flight. The compass is a reliable, self-contained unit requiring no external power source.
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www.allstar.fiu.edu/aero/MagComp.htm
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The things that the early navigators enjoyed most about the magnetic Compass, was that it was very easy to use, it made steering a ship much more accurate and it could even be used when the skies were cloudy, when the more accurate method of navigating by the stars was not possible.
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www.ixi.net/~4waystop/MAGNETIC.HTM
www.ixi.net/~4waystop/MAGNETIC.HTM
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magnetic compass n. An instrument that uses a magnetized steel bar to indicate direction relative to the earth's magnetic ... Thus, the use of a magnetic compass as a direction finder occurred sometime before 1044, but incontestable evidence for the use of the compass as a navigational device did not appear until 1119.
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www.answers.com/topic/compass-1
www.answers.com/topic/compass-1
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Therefore the magnetic stone which was used to magnetize the compass needle was called a lodestone. The magnetic, direction-finding property of the lodestone had been discovered in China as early as the twelfth century.
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www.rootsweb.ancestry.com/~mosmd/mmcompass.htm
www.rootsweb.ancestry.com/~mosmd/mmcompass.htm
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History of Chinese Invention and Discovery - Invention of the Magnetic Compass ... The figure to the right shows a working model of the first instrument known to be a compass. The spoon or ladle is of magnetic lodestone, and the plate is of bronze (non conducting metal). The circular center represents Heaven,
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www.computersmiths.com/chineseinvention/compass.htm
www.computersmiths.com/chineseinvention/compass.htm
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1. Figure 17 shows how to make your own magnetic compass. This type was used by Columbus on all 4 voyages to the Americas. The materials needed include a film canister, a pushpin, two sewing needles, cardboard and a bar magnet.
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aerospace.wcc.hawaii.edu/compass.html
aerospace.wcc.hawaii.edu/compass.html
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