Class+1-+Magnets+1

__ Magnets __ by Logan, Kiara, and Maddy

The History of Magnetism ~The Shepherd~ ~One of the most popular legends about the discovery of magnets is about a shepherd named Magnes. He was herding his sheep in Magnesia, when suddenly everything magnetic that was on him, stuck to the rock he was standing on. He dug into the ground and found lodestones that contained magnetite, which was either named after Magnesia or the shepherd, Magnes.

__ The Greek & Chinese __ ~The properties of lodestone were either discovered by the Greeks or Chinese.

__ Hans Oersted __ ~In 1820, Hans Oersted discovered that magnetism is related to electricity. //** FUN FACT! **//

~ People used to think that lodestone could keep their skin looking young, and apparently Cleopatra slept with lodestone in her bed for many many years.

//**__ Uses of Magnets __**//


 * ** Keeping things on refrigerator doors **
 * ** toys (such as remote control cars) **
 * ** Motors **
 * ** kitchen appliances (microwave, refrigerator, etc.) **
 * ** speakers **
 * ** junkyards (picking up big, heavy cars and other items that contain magnetic qualities.) **
 * ** TV/computers/gaming systems **
 * ** used in Chinese medicines since 2000 B.C. **
 * ** MRI **
 * ** can openers[[image:missmorrison13/mri.jpg width="219" height="145" align="left" caption="MRI"]] **
 * ** some camera cases & purses **
 * ** Telephones & cellphones **
 * ** microwave ovens **
 * ** ceiling fans **
 * ** CD players **

//**__ Advantages & ____ Disadvantages __**// // One advantage was that magnets were used to relieve pain and improve health. Another advantage was that magnets were in compasses that showed people where to go by pointing the direction of north. // //A disadvantage is that when you move a magnet close to something with a motor, it messes up the motor because there are magnets inside of the motor and when you bring a magnet closer to the magnets inside and the magnets will either attract or repel to the magnet outside of the motor, messing up the fields. The last disadvantage is.....// **CHOKING HAZARD!!!** // Magnets are actually a choking hazard because almost all magnets are small, so babies and small children might pick one up and try to swallow it.......possibly thinking that it is food... //

//**__ Personal Experience __**//
 * //** Most magnets can stick to people's braces **//
 * //** North and South ATTRACT North and North REPEL **//
 * //** They are always used/found in motors **//
 * //** Without magnets, many things wouldn't exsist. (i.e. motors, microwaves, hair dryers, refrigerators, fans, etc.) **//
 * //** People use magnets to stick things to their refrigerators or whiteboards.(notes,papers, etc.) **//
 * //** Used to keep doors shut. **//
 * //** Items that contain iron, nickel,or cobalt are considered somewhat magnetic objects. **//
 * //** Magnets only attract objects that contain iron, nickel, or cobalt. **//
 * //** You can pick up/hold objects that contain magnetic qualities. **//
 * //** You can make an object that contains magnetic qualities into a temporary magnet by rubbing it against a permanent magnet. **//
 * //** Magnetism is also related to electricity.(As Hans Oersted found out in 1820) **//



//** Our video about Magnetic Poles and arranging domains! :) **//

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Sources Cited []

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http://magnetsRfun.wikispaces.com

[|www.wisegeek.com]

[|www.ehow.com/list_7595886_disadvantages-magnets.html]

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[|www.howstuffworks.com/mri.html] (MRI picture)

[|www.electronicsandyou.com/electronics-history/inventions_and_contribution_of_hans_christian_oersted_to_electronics.html] (Hans Oersted Picture)

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