The Invention, History and Impact of Compass. Work done by : Yitong Wang firstname.lastname@example.org Sophia Yiu email@example.com Gaohong Liu firstname.lastname@example.org Hanlun Zhou email@example.com Project 1 Physics 001 Section 001. Before the Invention of Compass---.
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Work done by :
Yitong Wang firstname.lastname@example.org
Sophia Yiu email@example.com
Gaohong Liu firstname.lastname@example.org
Hanlun Zhou email@example.com
Project 1 Physics 001 Section 001
Prior to the introduction of the compass, position, destination, and direction at sea were primarily determined by the sighting of landmarks, supplemented with the observation of the position of celestial bodies. On cloudy days, the Vikings may have used cordierite to determine the sun's direction and elevation from the polarization of daylight; their astronomical knowledge was sufficient to let them use this information to determine their proper heading. For more southerly Europeans unacquainted with this technique, the invention of the compass enabled the determination of heading when the sky was overcast or foggy. This enabled mariners to navigate safely far from land, increasing sea trade, and contributing to the Age of Discovery.(http://en.wikipedia.org/wiki/Compass#Using_a_compass)
In the 14th century, the Syrian astronomer and timekeeper Ibn al-Shatir (1304–1375) invented a timekeeping device incorporating both a universal sundial and a magnetic compass. He invented it for the purpose of finding the times of salat prayers. Arab navigators also introduced the 32-point compass rose during this time.