Why do magnetic fields only happen with magnets?
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What are metals that are attracted to magnets or made into magnets called?
What is the difference between magnets and magnetic materials?
Asked in Body Piercing, Jewelry
How do you wear magnetic piercings with no pain?
Asked in Science
How is strength of a magnet affected by glass cardboard and plastic?
Magnetic field are unaffected by those materials. Magnets and electrical fields in general are only effected by other magnetic fields. Think of a compass that is brought near another magnet. Magnetic fields are exponential in strength meaning that they are most strong at the surface and quickly fade with distance. Dont have the equation but its simple and straight forward. So if you want a magnetic field to extend through a thick (5mmm) cardboard or plastic you will need larger more powerful magnets such as rare earth or neodymium magnets. Its really about the strength of the magnet and the distance of the magnetic field. Hope that helps.
Does shape effect the magnetic repulsion between two magnets?
Asked in Home Appliances
Do clothes dryers have magnets in them?
A clothes dryer usually has only one part that has any notable electromagnetic characteristics. (The electronic control circuit is not magnetic beyond the fact that it has wires that carry currents.) The part that employs magnetic fields in its operation is the electric motor. Most electric motors do not have permanent magnets in them but have field and stator coils that induce the electromagnetic fields. Only small electric motors (usually battery operated) use magnets due to space constraints.
How are temperary magnets different from permanet magnets?
Asked in Magnetism
Can magnets pick up all kinds of metals?
No. Magnets can only pick up metal that is magnetic. Ex. Titanium isn't magnetic. Or to be more precise, only ferromagnetic materials will be attracted to a magnet because they are more permeable to the field. Most materials are paramagnetic, meaning that they are no more affected by magnetic fields than free space, and a few materials such as bismuth are diamagnetic meaning that they are less magnetically permeable than free space and thus are repelled by magnets.
Asked in Astronomy, Math and Arithmetic, Physics, Magnetism
How is strength of a magnet affected by glass?
I don't think magnetism is affected by glass. Edit: Magnetic field are unaffected by glass. Magnets and electrical fields in general are only effected by other magnetic fields and materials which generate them. Think of a compass that is brought near another magnet. Magnetic fields are exponential in strength meaning that they are most strong at the surface and quickly fade with distance. Dont remember the equation but its simple and straight forward. So if you want a magnetic field to extend through a thick (5mmm) piece of glass you will need larger more powerful magnets such as rare earth or neodymium magnets. Its really about the strength of the magnet and the distance of the magnetic field. Hope that helps.
Asked in Information Science and Libraries
What is the difference between the magnetic fields of horseshoe and bar magnets?
Asked in Business & Finance
How are magnets used in industry?
Asked in Rocks and Minerals
Are there any natural magnetic minerals?
This may shock you, but all matter is magnetic just to varying degrees. So yes there is. Here are the 4 levels of magnetic property's if you will. and examples of the minerals that have them. Ferromagnetism - a strong attraction to magnetic fields. examples would be Magnetite and Pyrrhotite. Paramagnetism - a weak attraction to magnetic fields. Example would be Platinum, Diamagnetism. , Bismuth Is the only mineral that is diamagnetic, meaning it is repelled from magnetic fields. Magnetism. Only a variety of one mineral acts as a magnet, generating magnetic fields on its own. This mineral is Lodestone, the magnetic variety of Magnetite, which found in only a few deposits throughout the world. Although it is only weakly magnetic, its magnetism is definitely discernible.
Asked in Electricity and Magnetism, Magnetism
How do you reclaim magnets from computers?
I'm unsure of what you mean by "reclaim magnets," but the only thing close to a magnet would be in the toroidal inductors (you can see pictures on google) with a magnetic material inside. Unsolder the toroids and take off the wire to get the metal. Otherwise the magnetic fields are simply created by current going through wire. The field collapses very soon after current stops.