please give me atleast 5 advantages and 5 disadvantages of magnets in our daily life.thnx?
88029
Advantages:\n\n1) Our stereo speakers use them.\n2) They are very useful for displaying things on the refridgerator.\n3) They are very useful in finding small metal objects we've lost.\n4) They can be used for mass transportation, like a monorail.\n5) They can be used to make a compass.\n\nDisadvantages:\n\n1) Other people's car stereo speakers use them even when you don't want to hear it!\n2) They can erase magnetic media.\n3) They can destroy a television set.\n4) They are only effective with certain metals.\n5) Devices that depend on them can get messed up in an electrical storm.
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magnet \n\nAn object that attracts iron and some other materials. Magnets are said to generate a magnetic field around themselves. Every magnet has two poles, called the north and south poles. Magnetic poles exert forces on each other in such a way that like poles repel and unlike poles attract each other. A compass is a small magnet that is affected by the magnetic field of the Earth in such a way that it points to a magnetic pole of the Earth. (See magnetic field and magnetism.)
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Advantages:\n\n   Light\n   Motors\n   Electronics\n   Medical Equipment\n   Radio\n   Etc. Etc. Etc.\n\nDisadvantages:\n\n   Can be dangerous\n   Hurts if you stick it up your nose
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Magnets, dropping it, heat, water/humidity, age.
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HI.  Great questions.  just realised i only got 2 points for answering.  anyway.  Weird magnets aren't they.  they always have a north and a south pole.  Almost like a mini Earth!  at the centre of the earth matter is so supper heated that it almost, but not quite, turns into energy. This raw force changes into a mix of matter and energy, producing and expelling a strong field of power.   When volcanoes were very active in earths early years, quite frequently this strange mix spewed into our atmoshere and solidified quickly.  magnetism was trapped during this process and magnets were born.  strange but very true.  I L U J L.
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a)It is already a magnet. It can not become an electromagnet.\nb)Can not happen\nc)If this happens it will only be for a short period\nd)After a long time its power may be reduced but not lost completely\n\nSo I can not tell for sure. Mots likely c
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I had a magnet that sad it best.\n\nPlease give me the strength to change the things I can and the wisdom to know what things I can't change.
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Some types of metal and other magnets.
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We can shape magnetic fields to trap things, but those things must be moving charged particles.\n\nHumans are not magnetic and even a very strong magnetic field will not restrain them at all.
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The attraction between the magnets causes widespread jealousy thought the cellular world. The cells, red blood cells especially (because of their high iron content), commit suicide en mass when they realize they will never be able to experience the magnets happiness.
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Magnetization of materials\n\nFerromagnetic materials can be magnetized in the following ways:\n\n* Placing the item in an external magnetic field will result in the item retaining some of the magnetism on removal. Vibration has been shown to increase the effect. Ferrous materials aligned with the earth's magnetic field and which are subject to vibration (e.g. frame of a conveyor) have been shown to acquire significant residual magnetism.\n    \n* Placing the item in a solenoid with a direct current passing through it.\n    \n* Stroking - An existing magnet is moved from one end of the item to the other repeatedly in the same direction.\n    \n* Placing a steel bar in a magnetic field, then heating it to a high temperature and then finally hammering it as it cools. This can be done by laying the magnet in a North-South direction in the Earth's magnetic field. In this case, the magnet is not very strong but the effect is permanent.\nMagnetization of materials\n\nFerromagnetic materials can be magnetized in the following ways:\n\n* Placing the item in an external magnetic field will result in the item retaining some of the magnetism on removal. Vibration has been shown to increase the effect. Ferrous materials aligned with the earth's magnetic field and which are subject to vibration (e.g. frame of a conveyor) have been shown to acquire significant residual magnetism.\n    \n* Placing the item in a solenoid with a direct current passing through it.\n    \n* Stroking - An existing magnet is moved from one end of the item to the other repeatedly in the same direction.\n    \n* Placing a steel bar in a magnetic field, then heating it to a high temperature and then finally hammering it as it cools. This can be done by laying the magnet in a North-South direction in the Earth's magnetic field. In this case, the magnet is not very strong but the effect is permanent.
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prooly need ifrared thingy\ntry a industrial magnet
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I've already answered this question and you might want to refer to that for more details. But here goes. \n\nA magnet is made of ferromagnetic materials, and will only attract ferromagnetic materials. These are iron, nickel and cobalt. Any alloy that contains one or more of those is ferromagnetic.\n\nThe metal forms tiny grains as it cools from a liquid to a solid, and within these tiny grains are even smaller regions called magnetic domains. Think of groups of atoms packed together. Unless a material is abolutely pure, there will be odd atoms of other elements and when the metal cools, they do not stack together absolutely correctly. If it is only a tiny amount of impurities, we do not notice the difference in terms of size, shape or weight.\n\nBut the domains are not lined up the same. Think of a bunch of guys just starting basic training. They are all milling around on the parade ground. But let's say that we heat the bar of metal until it is almost ready to melt and then subect it to a strong magnetic field (stick it inside the coil of a strong electromagnet, and let it cool that way.)\n\nNow they are all lined up the same way (just the way a bunch of paper clips will al line up when you pick them up with a magnet.) And when the metal cools and become solid once more, now they stay in that position. It is like a drill sergeant coming and yelling at the new recruits until they line up in formation. Now they are ready to take orders and get some useful work done.\n\nWhen the troops all line up and march the same way, you can see the result. They are more orderly, when they march along their feet all hit the ground at once, and they look unstoppable! \n\nIt is the same way with the magentic material. Each one of the individual atoms has its own magnetic field, but when they are all pointing in random directions, nothing useful can be done. Some are pointing one way, some the opposite way. They act against each other and their corporate effect cannot be felt.\n\nSo, now that the atoms within the domains are lined up together, and the metal has cooled and solidified into a solid bar again, the domains are lined up in formation. Now, they are all pointing in the same direction and we can feel the effects of the magnetic field even outside the magnet itself. The magnetic field reaches beyond the magnet and loops around in space until it reaches the other pole, forming a sort of circuit.\n\nOkay, now we have a magnet and we can understand why it attracts another magnet, because opposite poles attract. north attracts south and south attracts north. (No such thing as gay magnets! it's a law of nature!). \n\nBut why does it attract ordinary non-magnetized iron or steel?\n\nThat has to do with the fact that even though the metal is solid, and the atoms cannot flow away as in a liquid, the atoms are still free to rotate in place without moving from where they are.\n\nThink of the group of raw recruits before they go through their basic training. They are standing around. All of a sudden, they hear a loud noice. It is the drill sergeant yelling at them. All their heads turn in his direction! He has their attention. It is the same way with a magnet.\n\nWhen the magnetic field of a magnet acts on the atoms (iron, nickel or cobalt) of a piece of ferromagnetic alloy that has not yet been magentized, even though the atoms can't move from their spots, they rotate to face in the direction of the magnetic field. They temporarily act together, just as the domains inside the permanent magnet do. The fancy scientific name for this is 'magnetic induction'.\n\nNow, the temporary (induced) pole in the piece of metal is attracted to the permanent pole of the permanent magnet. They move together, because the tendency is for the magnetic field to travel as short a distance as possible, and a pole alwasy induces the opposite pole. The two together, so the magnetic field can travel across the shortest possible distance.\n\nWhen the
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elements fall under one of three categories: stuff that is always attracted to a magnetic field, stuff that is always repelled by a magnetic field, and stuff that can be magnetized ei you can make a magnet out of it. For example, water (yes i know its not an element) is always repelled by a magnetic feild, titanium is always attracted and iron can be magnetized. To see the effects of water being repelled by a magnetic field, buy some neodymium magnets, (the bigget the better) and place it in a bowl of water so that the magnet is barely covered with water. place it in front of your compurer screen, and look at the reflection of the computer screen in the water just above the magnet. you will notice th reflection is warped just above the magnet.
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Magnetism is simply the movement of charge.  If you take a coiled wire, and put an electrical current through it, you will in effect get a magnet.
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you could... whith a very very strong field you can magnetize almost everything... but you wont afford enough money and space to do this at home :-)\n\nTry for ferrofluids, these are liquids(like oil, maybe water?) containing magnetic nanoparticles... you could afford that.
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I don't know much about that therapy, but I could give you some logic to think of.  Blood has iron in it. Iron is attracted to magnets.\nGood circulation heals, and possibly relieves pain (?).\nSo if you want pain relieved in a certain place, it would be logical to want blood there, so maybe the magnet attracts the iron in the blood, and causes the blood to flow there, or flow more freely or in a different way. Other than that I have no clue why magnets would help you, other than possibly cancelling out neurons that send electrical pulses.