The Chinese Compass
Transcript: Comparing and Contrasting - Past and Present Present day Compasses The Compass Thanks for watching!!!!! Diego Garcia The Chinese Compass The Compass' Scientific Relevance The Chinese Compass was scientifically relevant because it would soon revolutionize transportation, allowing people to orient themselves in the direction of their destination. A cooled iron needle rubbed with magnetite combined with a silk thread, water, or a plate or bowl, were the items used in the creation of the compass. The compass has helped humans for hundreds of years to find their way when they thought they were lost. The compass has enhanced our sense of position, as in knowing where North, South, West, and East are, and your current location on the planet. The compass has had a positive effect on humans because it has been a helpful navigation tool. A thousand years ago, compasses were were iron needles placed on a plate with markings. Nowadays,(*Sigh*) just open your compass app on your iPhone and it tells your coordinate cation. In the 2-3rd century, compasses were magnetized iron needles placed on a marked plate, floated in water, or hung from a string. Nowadays, everything is mobile, so compasses are an app or an actual circular compass . The way the compass has evolved over the last thousand years is extraordinary. It went from being a simple magnetized needle to a circular metal tool with the n,w,s,and e markings to a compass on a plane or an app on your iPhone. Chinese Compasses Bibliography By the Tang dynasty(7-8th century CE), the Chinese Compass was a needle rubbed with magnetite and suspended in water(early 11th century). Chinese scholars also noticed that when held in North-South directions, it became magnetic. soon the compass could be floated in water(Wet Compass), placed on a dried shaft(Dry Compass), or suspended from a silk thread. Later the plate was converted to a bowl, while retaining the markings of the heaven's plate(in a simplified manner). The compass was invented in 206 BC, by the Chinese(does not specify an inventor), in China. Mr. Jones "Chinese Inventions: compass" page http://www.whoinvented.org/who-invented-compass/ http://www.smith.edu/hsc/museum/ancient_inventions/compass2.html https://en.wikipedia.org/wiki/Compass http://education.nationalgeographic.org/encyclopedia/compass/