Class+2-Magnets+1

media type="youtube" key="Fy5jFVV5tVM" height="276" width="369" Magnetism Video (YouTube)





=History=
 * The history of magnetism started earlier than 600 B.C
 * One of the worlds oldest tools that used magnets was the compass
 * Magnetism comes from the Greek city magnesia because many natural magnets were found there.
 * People from a long time ago still used magnets, but they might just not have known it was magnetism. People have also made up a lot of stories to try to guess who first found out about magnetism, but nobody really knows for sure.
 * Only one type of magnets was known until 1821, when they found out more about magnets and magnetism.
 * Loadstone was the first magnet known in history.
 * William Gilbert was the first to investigate magnetism. He lived from 1544-1603

=Uses for magnetism=
 * To keep refrigerator magnets on it or to keep the door closed.
 * A magnetic strip on credit cards to sense information when you use it to buy something.
 * Many toys contain magnets in to hold parts together.
 * When a motor is turned on, electromagnets repel the permanent magnet to make it spin.

=Disadvantages and advantages of magnetism=
 * Disadvantages:**
 * Can be destructive around electrons like, computer hard-drives, cassette tapes, or other electromagnet objects
 * They can demagnetize other objects if it's strong enough. It will drain the energy out of the other object.
 * small magnets could be a choking hazard
 * Advantages:**
 * energy efficient
 * environmentally friendly
 * <span style="color: #1520e0; font-family: 'Comic Sans MS',cursive;">you can use it in everyday things since it has a lot of uses.
 * <span style="color: #1520e0; font-family: 'Comic Sans MS',cursive;">Alnico magnets have excellent temperature stability and can perform in high temperatures

=Personal Experiences=
 * <span style="color: #f01488; font-family: 'Comic Sans MS',cursive;">Last summer, in my art class, I attached a magnet to a piece of glass so I could put it on my refrigerator.
 * <span style="color: #f01488; font-family: 'Comic Sans MS',cursive;">I used to make bags and I needed something to keep it closed, so I attached a magnetic clip to hold it shut.
 * <span style="color: #f01488; font-family: 'Comic Sans MS',cursive;">When selling for swim team I used 2 magnets one on top of the table and one on the bottom to hold the blanket down.
 * <span style="color: #f01488; font-family: 'Comic Sans MS',cursive;">In environmental club, we used magnets to attach to a bottle cap to make it a magnet that you can attach to anything magnetic.
 * <span style="color: #f01488; font-family: 'Comic Sans MS',cursive;">Our teachers put magnets on the side of the doors so the doors don't get locked.
 * <span style="color: #f01488; font-family: 'Comic Sans MS',cursive;">I used magnets to close the refrigerator door so none of the cool air would get out.

=Works cited/citations:= > > > > > > <span style="color: #f5b829; font-family: 'Comic Sans MS',cursive;">What are the Disadvantages of Magnets? N.p., n.d. Web. 20 Feb. 2013. <http://www.ehow.com/list-7595886-disadvantages-magnets.html>.
 * <span style="color: #f5b829; font-family: 'Comic Sans MS',cursive;">History of Magnetism. N.p., n.d. Web. 19 Feb. 2013. <http://science.jrank.org/ pages/4081/magnetism-history-magnetism.html>.
 * <span style="color: #f5b829; font-family: 'Comic Sans MS',cursive;">History of magnetism. N.p., n.d. Web. 19 Feb. 2013. <http://nbsp.sonoma.edu/ resources/teachers_materials/physical_01magnetism/magnetism.ppt>.
 * <span style="color: #f5b829; font-family: 'Comic Sans MS',cursive;">History of Magnetism. N.p., 2012. Web. 20 Feb. 2013. <http://magneticosleep.com/about-magnetism/history-of-magnetism/>.
 * <span style="color: #f5b829; font-family: 'Comic Sans MS',cursive;">The History of Magnets and Electromagnets. N.p., 1999. Web. 20 Feb. 2013. <http://www.ehow.com/about_6531868_history-magnets-electromagnets.html>.
 * <span style="color: #f5b829; font-family: 'Comic Sans MS',cursive;">History of Magnetsim. N.p., n.d. Web. 19 Feb. 2013. <http://www-istp.gsfc.nasa.gov/Education/magnet.html>.