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Magnetism in the 21st Century

Magnetism
by

Rachael Beck

on 29 April 2010

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Transcript of Magnetism in the 21st Century

Magnets have North and South Poles Like Poles Repel and Opposite Poles Attract Magnetic field lines flow from North to South Magnetism in the 21st Century Natural magnets are made from Iron, Nickel, and Cobalt Magnets display magnetic characteristics Magnets have North and South poles. Like poles repel and different poles attract. Magnetic field lines flow from North to South. Natural magnets can only be made from Iron, Nickel, and Cobalt Magnetic substances can be induced by magnets to become magnets Medicine The MRI The MRI is a machine that is used to see inside the human body. The machine can pick out a small part of the body and create a 3-D picture of the area. The MRI is used in today’s world to help diagnose illnesses and to find other abnormalities in the body. It can do this because of the magnets inside of it. Electronics Speakers In today’s world, magnetism is used for entertainment too. The magnet inside of the speakers allows us to listen to music. Using magnets we can amplify the sounds that we record and play them back later. By
Rachael Beck
and
Moriah Mattson Navigation Compass Compasses are one of the most important navigational tools ever created. They are still in use today, although they were created hundreds of years ago. A compass is made with a lightweight magnet balanced on a nearly frictionless pivot point. A compass can be used to go anywhere, because it will always point you north. Toys Geomag Building Blocks Many children’s toys in the 21st century use magnets. With this toy, children can build with magnets, so they can create many fun buildings. The toy is used in today’s world to entertain children. Astronomy Superconducting Bearing for Space Telescopes This invention uses hybrid superconductor magnetic bearings to mount a lunar telescope. This mounting system, which uses this magnetic bearings, is used to attach a telescope to the moon. From this altered telescope, scientists are able to conduct astronomical studies. http://www.howstuffworks.com/mri.htm http://www.magnet.fsu.edu/education/tutorials/magnetacademy/mri/
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