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How Chinese Rudder Effected Christopher Columbus
1,541 wordsThe development of the rudder was one of the most important sea navigational inventions that have ever been invented. Before the twelfth century in northern Europe, ships were steered by a quarter-rudder mounted on the stern side of the vessel. Up until the fourteenth century the use of the quarter rudder persisted in the Mediterranean. Two quarter-mounted steering oars were used. By age of exploration, the pintle-and-gudgeon rudder, hung from the sternpost had replaced quarter-rudder. The rudde...
Free research essays on topics related to: sixteenth century, opposite direction, ships, christopher columbus, nineteenth century -
Opposite Direction Automatic Transmission
795 wordsTo skid means to slide or slip (without revolving) over a surface, because of loss of traction. Skidding caused over 24, 000 accidents in 2001. Out of these 24, 000, about 200 caused death, 7, 000 caused personal injury, and 17, 000 caused property damage. Applying the brakes or accelerator too hard, spinning the wheels, and going around a curve too fast can all cause you to start skidding? Other factors that contribute to skidding include how well your vehicle holds the road, traction (what mak...
Free research essays on topics related to: wheel drive, manual transmission, opposite direction, automatic transmission, steering wheel
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