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Ancient uses of magnetism
Transcript of Ancient uses of magnetism
- They then used the idea to protect their palaces by using lodestone to make the gates. - Shepherd Magnes was the first person credited with the discovery of Magnetism.
- Walking along when the iron nails in his shoes and staff stuck to the ground and named it magnetite
-The first known mention of magnetite in Greece was 550 BC. - protecting palaces from invaders as all armour/weapons would get stuck on the gate upon approach.
- The compass was used when attempting to navigate through fog while in battle.
- Used to navigate ships - Chinese traded ideas with the arabs who traded with the Europeans who used compasses to navigate ships from 1269 on.
- Used the idea to observe the magnets and lightning together and ended up creating electromagnetism.
- tried to come up with theories about magnetite but were unsuccesful. - used magnetism to perform tricks and make objects of worship float in air
- also used for navigation through the desert - The thought of lodestone brought peace of mind with it's supposed god like healing powers
- Compasses also used by William Gilbert
- Compasses were very useful for the Europeans as they were able to explore farther First Mention of "Lodestone" - The Chinese invented the Mariners compass in Early 12th century.
- They did this by putting a splinter of lodestone on water and realizing it always pointed North - South. The Mariners Compass
That the Chinese Invented Lodestone Cartoon Version of what
The first Emperor of China's Defence
mechanism (made of Lodestone) may
have looked like Cartoon Version of magnetite
being discovered in Magnesia
(Greece) Cartoon Version of an example of what the Egyptian Magic Tricks may have looked like “The Story of Magnets.” Coles Electroacoustics. 2013. Campbell Pryde Ltd. Jan 142013. < http://www.coleselectroacoustics.com/edmagnetstory.shtml >
Harrison, David. “Ancient Greece: Electricity, Magnetism and Pyroelectricity.” Hellenica. Jan 15 2013. < http://www.mlahanas.de/Greeks/ElectroMagnet.htm >
Jezek, Geno. “History of Magnets.” How Magnets Work. 2013. Youronlinestore. Jan14 2013. < http://www.howmagnetswork.com/history.html > Websites Websites/Video Reese, Sam. “Who Discovered Magnets.” WhoGuides. Oct 3 2009. Ad Choices. Jan 16 2013. < http://www.whoguides.com/who-discovered-magnets >
Stern, David. “Magnetism.” The Exploration of the Earth’s Magnetosphere. June 5 2008. Jan 15 2013. < http://www-istp.gsfc.nasa.gov/Education/Imagnet.html >
Scientic Eye: Magnetism. Dir. Steve Lewis-Wright. Channel Four. Film. Images http://www.google.com.sg/imgres?um=1&hl=en&sa=N&tbo=d&authuser=0&biw=1118&bih=616&tbm=isch&tbnid=RBFVBT5NHAIyWM:&imgrefurl=http://www.computersmiths.com/chineseinvention/compass.htm&docid=fWDldapkUgJhcM&imgurl=http://www.computersmiths.com/chineseinvention/images/floatcompass.jpg&w=200&h=216&ei=eKf7UNu4K4rprQfS7IHQBw&zoom=1&iact=hc&vpx=934&vpy=333&dur=459&hovh=172&hovw=160&tx=82&ty=109&sig=100212144440893793385&page=1&tbnh=144&tbnw=134&start=0&ndsp=19&ved=1t:429,r:12,s:0,i:118 http://www.google.com.sg/imgres?um=1&hl=en&tbo=d&authuser=0&biw=1118&bih=616&tbm=isch&tbnid=MzNP9KFA2R0FmM:&imgrefurl=http://www.strongneodymiummagnets.com/ItemDesc.cfm%3FId%3D229904%26Title%3DLodestone%26Collection%3DClassRoom%26CollectionItems%3DClass%2520Room&docid=00moVRuOeGcZ9M&imgurl=http://www.strongneodymiummagnets.com/images/320Medium/ClassRoom/Lodestone.jpg&w=1200&h=1048&ei=pqf7UPOcH8XqrQfJioGIDQ&zoom=1&iact=hc&vpx=854&vpy=74&dur=801&hovh=210&hovw=240&tx=179&ty=137&sig=100212144440893793385&page=1&tbnh=147&tbnw=169&start=0&ndsp=18&ved=1t:429,r:5,s:0,i:133 Scientic Eye: Magnetism. Dir. Steve Lewis-Wright. Channel Four. Film.