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Magnetism in the 21st Century

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Michael Beck

on 29 April 2010

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Transcript of Magnetism in the 21st Century

Double click anywhere & add an idea Magnetism Medicine Astronomy Navigation Electronics Toys Maglev The guideway repels the large magnets on the train, allowing the train to levitate. This eliminates friction. Once the train is levitated, power is supplied to the coils within the guideway walls to create magnetic fields that pull and push the train along the guideway.

http://science.howstuffworks.com/maglev-train.htm Magnetic Resonance Imaging (MRI) A magnetic field is produced by running an electric current throughout coils of wire. Other coils in the machine send and recieve radio waves. A computer processes these and generates a series of images.

http://www.radiologyinfo.org/en/info.cfm?pg=bodymr Electromagnet An electromagnet is
created by connecting the negative terminal of a power source to the positive terminal via a wire. The current flowing through the wire produces a magnetic field.

http://science.howstuffworks.com/electromagnet.htm Gauss Rifle When you release the first ball, it is attracted to the first magnet. The force it hits the magnet with is transferred to the other balls touching the magnet. As each ball is pulled toward each magnet, the force increases. Finally, when the last ball recieves all of the transferred energy, it is propelled with a substantial amount of force.

http://science.howstuffworks.com/electromagnet.htm Earth's Magnetosphere Around Earth's magnetic field, there is an area we call the magnetosphere. It restricts the entrance of most particles from the sun to Earth. Many other planets have magnetospheres, but Earth's is the strongest.

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