10 Details of Magnets
Basics1. The primary magnetic compasses were invented because of the Chinese around 221 to 206 B.C. during the Qin Dynasty for use by fortune tellers. Inside eighth century, the Chinese developed compasses for navigation like the ones we still use today. 2. Just like the Earth, each magnet incorporates a north pole and a south pole, and opposite poles attract. Research two magnets by putting them together. Should they stick together, they are opposite poles. Flip one over and they will repel the other person.Curious Behavior of Atoms 3. Rubber Magnet(roll) Things are consisting of atoms. Each atom has electrons circling a nucleus, and the electrons create a magnetic field that has a north and south pole. The majority of things�Clike flesh, wood or plastic�Chave random keeping atoms, in order that they is not magnetic. Iron, nickel and cobalt are different. Categories of atoms, called domains, lineup together to build magnetic properties.Magnetization 4. Anything that contains iron, nickel or cobalt is usually temporarily magnetized. Steel contains iron, to help you to magnetize items like paperclips, screws and nails. Rub them during one pole of any magnet, again and again, forever in exactly the same direction. For a while, they're going to follow one another and become weak magnets. This happens because connection with magnets causes the atoms inside what to fall into line all of their poles inside same direction. 5. Heated iron are not magnetized. Thermal energy from heating definitely makes the atoms in the iron jiggle. Jiggling atoms can't make properly, so heated iron loses its magnetism. The temperature where this takes place is termed the Curie point after touchdown Pierre Curie, the physicist who discovered it.Magnets Around Your home 6. A solid magnet can erase computer hard disks, credit cards, video and audio tapes, and forestall a wind-up watch. Magnets will also customize the color properties of TV and computer screens. 7. Magnets are widely-used in a large amount household items. Some examples of common household stuff that contain magnets are stereo speakers, headphones, telephones, microwaves, doorbells, refrigerator door seals, dishwashers, computers and TVs.Interesting Uses 8. Dairy farmers and vets feed or insert magnets in cows to stop hardware disease. When cows graze, they often times ingest stuff like bits ferrite magnets of wire and nails left inside the field by careless workers. These bits and pieces become lodged within the tissues, causing inflammation and irritation. The cow loses her appetite and can't produce milk or put on pounds. A magnet in a cow's stomach will pull every one of the iron bits together maintain cow from getting sick. 9. Water is diamagnetic, this means it's repelled by both magnetic poles. An extremely strong magnet can repel things that include mostly of water, like grapes and living creatures. Researchers at NASA's jet propulsion lab in California have levitated frogs and mice. Scientist Yuanming Liu speculates that she could probably make use of the same principles to make a magnetic flux sufficiently strong to levitate a human, nevertheless it would cost a lot of. 10. Maglev trains operate using magnetic repulsion. Magnets are connected to the track and also to the lower with the train, making the train ��float�� above the track. While there is no friction, these trains travel very quickly. The highest recorded speed is 343 miles per hour by a Japanese train.
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