i found burnt safety matches possess magnetic activity.their tips are attracted by a magnet.why?
112785
The igniter for safty matches has some metal in it, and is not completely consumed in the fire when the match is lit.
1084812
Iron is usually attracted to a magnet. If a bar of iron is magnetized, One end of the bar will attract one pole of the magnet, and repel the other pole of the magnet. \nCopper, nickel, and zinc are not magnetic. They neither attract or repel a magnet, and they cannot be magnetized.
56297
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.
209289
start here:\nhttp://en.wikipedia.org/wiki/Magnet
946785
No one has answered for 5 hours probably because no one has heard of an incandescent magnet.\n\nA permanent magnet is usually formed from cooling a ferromagnetic material  in the presence of a strong magnetic field.  The field causes the individual magnetic domains to align parallel to the field.  When the material cools and solidifies, these small particles are no longer free to move.\n\nIf you heat such a magnet enough for it to incandesce, the tiny particles are again free to move, and will randomize their orientation to minimize the total energy of the system.
1085489
Metal objects such as the spoon & the pointed ends of the fork act to concentrate the electric field formed at the tips. This has the effect of exceeding the dielectric breakdown gradient of air, about 3 megavolts per meter (3×106V/m), causing sparks to form. This effect is somewhat analogous to the effect of St. Elmo's fire.\nMetal or conductive object placed into the microwave will act as an antenna, and its electrons will thus be thrashed back and forth through the object (a high frequency alternating current) causing some ohmic heating to occur\n\n- no damage to magnetron, but !
1834
They do not pull towards all metal items just ferromagnetic materials such as iron. The phenomenon is due to principle of quantum mechanics. See http://en.wikipedia.org/wiki/Ferromagnetism for more detail.
1029513
has to be metal, preferably in several sheets not touching each other. Wood and plastic do not stop magnetic field.\n\nThick piece of lead would definitely work, and is completely safe (as long as you do not drop it on your foot and wash your hands afterwards)
775698
An electron, with its negative charge, is surrounded by an electromagnetic field. Normally, in most materials, this field is canceled out by the random positioning of all of the other electrons in the material. \n\nIf these electrons are aligned, the material will become a magnet with the magnetic fields aligned toward one end of the material.\n\nIf the electrons are traveling through the material (current or electrical flow) the magnetic field will be moving with the electrons and will surround the wire (refer to "right hand rule") \nIf the wire is coiled around a piece of iron, for instance, this magnetic field will become very strong and align the electrons in the iron - thus magnetizing the iron.
617682
Gold and silver are not ferromagnetic materials and so do not have any magnetic properties. \n\nThe following explanation is from school for science.com  \n\n"Ferromagnetic materials are strongly attracted by a magnetic force. The elements iron (Fe), nickel (Ni), cobalt (Co) and gadolinium (Gd) are such materials. \n\nThe reasons these metals are strongly attracted are because their individual atoms have a slightly higher degree of magnetism due to their configuration of electrons, their atoms readily line up in the same magnetic direction, and the magnetic domains or groups of atoms line up more readily. \n\nIron and steel\nIron is the most common element associated with being attracted to to a magnet. Steel is also a ferromagnetic material. It is an alloy or combination of iron and several other metals, giving it greater hardness than iron, as well as other specialized properties. Because of its hardness, steel retains magnetism longer than iron.\n\nPermanent magnets\nAlloys of iron, nickel, cobalt, gadolinium and certain ceramic materials can become "permanent" magnets, such that they retain their magnetism for a long time."\n\nTry looking at the website for more information. Hope that helps!
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Magnetic property of a material is due to the arrangement of Domains in it. If you are not of science background, simply think it as it is the arrangement of atoms of the material, which is responsible for its magnetism. If you provide a permanent magnet with electric supply, the arrangement of atoms in it will be disturbed resulting in loss or decrease in its magnetism.\nNot only the electric supply, but heating or even strong jerks can also lead to the disturbed atomic arrangement and therefore decreased or completely lost magnetism.
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I always saw cowboys light a match from the heel of their boot.  Probably only works in the movies.\n\nThere are matches that have a white tip that can be lit on anything rough.  I knew a guy who could light one off his tooth !
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Why do magnets work? \nMagnetism is an invisible force felt within the space around a magnet.  This space, called the magnetic field, can either attract (pull) or repel (push away) other magnets and some types of metal.\n\nAll magnets have two ends (poles).  These poles are opposites and are called the north and south poles.  Opposite poles attract, while like (similar) poles, repel.\n\nThe Earth’s core has its own magnetic field.  Magnetic north and south are near the geographic north and south poles.\n\nNASA has been experimenting with magnetic fluids for over 30 years. Magnetic fluids were made to help put fuel into a rocket engine. NASA was trying to solve the problem. of how to move fuel without gravity.  Tiny pieces of iron were put into the fuel. A magnet pulls the iron and could help get the fuel into the engine.\n\nMagnetic fluids are made by mixing pieces of metal in liquids to make a fluid that is very different from other liquids. It will stick to a magnet and can be directed by magnetic forces. Magnetic fields can shape the fluid, and magnetic fluids can change their thickness. They become hard around magnets.\n\nScientists have tried to use magnetic fluids to solve other problems. They’re used to make better computers. Scientists are still thinking of new ways to use the fluids.\n\nYou may use magnetic fluids!  Some cars have them in their shock absorbers. They are used in some buildings and bridges. The fluids help protect structures from damage from earthquakes or strong winds. There is still a lot to learn about these magnetic fluids. NASA is using the Space Station to learn more about them. They hope to find new ways to use them. \n\nKSNN thanks NASAexplores as a source of information. For more information about this topic and additional teaching resources go to http://www.nasaexplores.com
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No , At least not the ones you buy at the automotive stores..\nThe idea is that magnets can change the polarity of the petroleum molecules and increase the combustion efficiency\n Now in theory "Yes" it would work. Magnets can soften water by the same effect . They cause the magnetic bonds to change (line up) cause the bond to breakdown and metals in water can not bond to form calcium deposits and rust stains..But gasoline is not introduced into the combustion chamber in a free flow manner..If you could place magnets That contain a very Strong field ( about 3 times stronger than the one the stores sale) and place them right at the fuel injection port. You could see an increase in burn efficiency\n\nNow you ask how do I know this. If you look up Elwood Haynes on the Internet. You well see he was one of America's automotive pioneers. just about all of my family since Elwood have been in the automotive.aerospace industry.. Before I became a hospice Pastor I worked as a experimental aerospace engine designer. developing new high temp alloys for jet engines and other projects..So I am not yanking your tail with this answer. If you want to buy something that will give you better performance and gas mileage buy a copper core spark plug and there are spark plug wires made that contain sequential fire capacitors in them. They are expensive but do work..So i don't' know the name of the wires but I could find out for you..
1156292
The alpha particles have a positive charge. A magnet  would deflect them away from the others.
27859
yes, they use magnetic fields.  3m appears to not publicize how the technology works (presumably for good reason, if it was well understood then it would be easy to defeat!)\n\nanyway i found a patent for a detection system that has some background that explains how they work.  basically they are a sandwich of 2 kinds of material.  one is a permanently magnetic material, and the other is a permanently-magnetizable material.  the poles of the two materials are oriented in opposite directions.  when you bring the magnetizable material near a strong magnet, it is magnetized, and the magnetic fields cancel out.\nthis allows them to pass through a detector without setting it off.  then when they are returned, they are exposed to a field that orients the magnetizable material the other way, which makes the fields add up into a strong magnetic field. this makes them set off the detector when you walk through it.\n\nmore info at the link below, which is not a patent for tattle-tape, but a patent for some kind of sensitizing/desensitizing system for tattle-tape:\nhttp://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=1&f=G&l=50&co1=AND&d=ptxt&s1='tattle+tape'&OS=%22tattle+tape%22&RS=%22tattle+tape%22
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Back in the 1960s, nearly all watches were mechanical, and some of the moving parts were made of steel.   A strong magnetic field would gum up the works, slow them down or even stop them.   But a magnet won't harm an electronic watch with no moving parts, like a digital watch.   These days, only top-end-of-the-market watches like Rolex and Omega have moving parts.   Just down the road from us is an aluminium smelter which offers guided tours to the public.   The potline where the aluminium is smelted electrically draws very heavy current; about 200000 amps.   The bus bars that carry the current have a very strong magnetic field around them.   One of the tricks the guide performs is to hold a steel crowbar and the magnetic field whips it out of his hands and it flies across the room.   They tell you to hand your watches in before entering, even though about 90% of them wouldn't be affected.   It's a whole lot simpler and less error-prone than checking each individual watch.