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What does demagnetize mean?
Demagnetize means to remove the magnetism from an object, causing it to lose its magnetic properties. This can be done by exposing the object to a magnetic field in the opposite direction to cancel out the existing magnetization.
How do you re energize a small magnet?
When a magnet is weak, you can do three things to try to recharge it. You can rub a stronger magnet across its surface, you can stack them tightly and in the same alignment, or you can place it on something that floats in water, remove it and strike it with a hammer. These methods are not guaranteed to work.
How can you demagnetize metal and what is the concept of a demagnetizer?
To demagnetize (degauss) a metal, you can heat it above its Curie temperature and cool it and the magnetic properties will not return. But this is probably not what we're looking for. Degaussing a metal is usually done by "sweeping" it with an alternating magnetic field. That what a degaussing coil does. It's often powered by the 60 cycle per second AC field of the power grid (50 Hertz in lots of places other than the US). Take a coil, include enough windings in it to provide sufficient inductive feedback (so you won't short the line) and you've got a degaussing coil. You may or may not want to include a core. Bulk tape erasers (they're still around) have a core, and TV's with CRT's can be degaussed with a coil that does not have a core built in (it's an air core inductor). The coil (with or without core) has a switch and a power plug. Plug it in, turn it on, and either move the magnet you want to demagnetize around in the field or move the field around the magnet. Slowly move the field away from the (now demagnetized) magnet to decouple it, and turn it off. You've "swept" the magnetic field from the magnet. Tool degaussers work the same way. The duty cycle of degaussers varies, and they come in different sizes and shapes, depending on the application. The heart of the degausser is the AC coil, with or without core. Go to a site like eBay and use "demagnetizer" or "degausser" in your search argument and look at the pictures. Some portable units have a battery to power them up, but the battery will be tied to a circuit that creates AC or pulsating DC (with its "cycling" magnetic field) to provide the degaussing action.
Does every magnet necessarily have a north and a south pole?
Yes,every magnet has a north pole and a south pole.IF YOU WANT TO KNOW MORE ABOUT THE SOUTH AND THE NORTH POLES :If you have a magnet and you make a line exactly in the middle you will see that one side is the north pole and the other one is a south pole . You can even experiment this : when you are done drawing a line cut your magnet by that line . Do you think that you will have two magnets and one of them is south pole and the other one is the north pole . Well no !!!!!! You will have two magnets but both of them have south and north poles.Now:Remember , you know this magnets attach to each other .But north pole and an other north pole will never attach to each other.And the same thing goes for the south poles. Two south poles will never atach.Only two different poles will attach to each other ( north and south will attach, and south and north will attach to each other as well).ALL magnets have one north pole and one south pole.
Can you create electricity from a magnet?
The simple answer is by induction. Induction is the "sweeping" of a magnetic field across a conductor and the generation of electromotive force (EMF) or voltage in this action. By taking a rotor with many turns of wire on it and rotating it inside a stator, which has a permanent magnetic field (either from permanent magnets or, more likely, an electromagnet), we generate electricity. It's done all the time.
What a magnet does?
A magnet attracts other metal objects to it. This is done by combining the following materials: iron, boron, and neodymium. These materials make a magnet, and a magnet can also be made by rapping a copper wire around iron and running electricity through it, making an electromagnet.
How can you break a magnet with out breaking in in half?
Cutting a magnet in half can be done in a number of ways. A hack saw might work well (but the cuttings will stick to the magnet and the saw blade). Some magnets can actually be broken in half. But that leaves a "rough" end and is imprecise.
How do you demagnetize earphones?
I've done it and it seems to work when u pass them in front of other magnets and/or other speakers.
What does demagnetize mean?
Demagnetize means to remove the magnetism from an object, causing it to lose its magnetic properties. This can be done by exposing the object to a magnetic field in the opposite direction to cancel out the existing magnetization.
What do a magnets do?
A magnet attracts other metal objects to it. This is done by combining the following materials: iron, boron, and neodymium. These materials make a magnet, and a magnet can also be made by rapping a copper wire around iron and running electricity through it, making an electromagnet.
Which is a to make a steel rod into a magnet?
To turn a steel rod into a magnet, you can use a process called magnetization. This can be done by rubbing the rod with a strong magnet in one direction, aligning the magnetic domains within the steel. Alternatively, you can place the steel rod in a strong magnetic field, such as that produced by an electromagnet, which will also align the magnetic domains and create a permanent magnet.
Can a magnet spin a wheel?
Yes, I haven't done any experimentation yet, but I've seen an electromagnet do it. I am not sure if it would work with permanent magnets though. Hope this helps at all.
What can be done with an electromagnet that cannot be done with a regular permanent magnet?
An electromagnet's magnetic field can be controlled by adjusting the current flowing through it, allowing for dynamic control of the magnet's strength. This flexibility makes electromagnets suitable for applications such as magnetic levitation, electric motors, and electromagnetic cranes, which cannot be achieved with regular permanent magnets.
What does a megnet do?
A magnet attracts other metal objects to it. This is done by combining the following materials: iron, boron, and neodymium. These materials make a magnet, and a magnet can also be made by rapping a copper wire around iron and running electricity through it, making an electromagnet.
How do you magnetize a dress maker's pin?
You can magnetize a dress making pin by stroking it in one direction with a permanent magnet. I have done it using a good quality fridge magnet. Dress making pins may become magnetized when they are dropped on a hard surface, for example a tiled floor.
HOW A BAR MAGNET SUSPENDED IN THE AIR?
It can be done with cotton or string if the magnet is not too heavy.
What is a magnet motor?
A magnet motor, or permanent magnet motor, is a hypothetical device that, if made to work, would use the attraction and repulsion properties of permanent magnets to rotate a shaft indefinitely, or until the magnetic domains disassociate. The concept of the magnet motor is contrary to several known laws of physics, including the law of conservation of energy. Advocates of such devices insist that magnets have the power to do work, but the reality is that a magnetic field has no power to do work unless energy is stored within the field, which is done by moving the magnet with an outside source, such as the movement of one's hand or an electric current. Once stored, and the motor set in motion, this potential energy is quickly converted to kinetic energy, and then to heat through friction. A magnet motor cannot rotate on its own because it produces no energy of its own, thus the very idea of the magnet motor is fundamentally flawed.
