Bar Magnets Essay

What is magnetism? When two pieces of iron are attracted to each other by physical means or electrical means.

The current has a positive charge in one side of the coil and it transforms to negative when it gets to the other side of the coil. This charge controls the magnetic field, making the like charges repeal and the opposite charges attract.

Bill Nye Resources on Magnets and Magnetism: http://billnye.com/billnye_resource/magnetism/ (Links to an external site.)Links to an external site. and https://vimeo.com/121217374 (Links to an external site.)Links to an external site.

Yes, that’s true, though ‘magnetic’ in this sense means something a little different. Metals that don’t stick to magnets are known as ‘non-ferrous metals’. Some of these metals include copper, aluminum, lead, and nickel along with alloys such as brass. These metals share many similarities, but the one that keeps them from sticking to magnets is the fact that they don’t have trace amounts of iron in them. The iron is what

The MRI scanner is a large magnet that is 30,000 times stronger than the earth’s magnetic field. The force increases as a person or a ferromagnetic object move closer to the magnet. The strong magnetic field of the MR scanner is Always on even when the MR scanner is not in use.

Maglev is a system in which the vehicle runs levitated from the guideway (corresponding to the rail tracks of conventional railways) by using electromagnetic forces between superconducting magnets on board the vehicle and coils on the ground. The following is a general explanation of the principle of Maglev.

There are three requirements for the magnetic fields: “A large reservoir of fluid that can conduct electricity

Every 500 000 years, the magnetic reversal occurs which known as "normal polarity" and "magnetic chrons" with the influx in ultraviolet radiation, however, it is difficult to explain.

Magnetism occurs when a magnetic field forms. There are two sides of a magnetic field; south pole and north pole. If the two poles are opposite, they will attract and vise versa. A magnet can magnetize an iron object. Electromagnetic waves work

It is the observed interdependent relationship between magnetism and electricity at the subatomic

To start on our journey Jay and I started out towards magnetic north using our GPS (global positioning system) on a beautiful mountain in the great state of Hawaii. You don’t realize how beautiful nature and the world is until you get out and experience it with your own eyes. To even think that magnetic reversals can happen at any given time and change the way we would be headed on the mountain is insane. The Curie point can show why the magnetic field changes. The

What magnetism does to affect your life is that every day that you use electricity you have un appreciated the fact that magnetism was one of the opening things to electricity. Did you know that the man who invented electricity was the same man who invented magnetism. People somehow had compasses before magnetism

The electricity from the positive and negative end of the battery and flows through the wire and makes the wire spin but you need to have the magnet for the wire to spin. You can change the way the wire spins but flipping the magnet over. The motor uses the attracting and repelling forces to make the wire spin. If you use stronger magnets the force will be greater. If you coil the wire more the magnetic field will get larger. But you cannot put to many coils in it or it will become too heavy. If you have wire with a coating you will have to scrap it off for it to work. If you put the support braces to far apart that can also become a problem. You can predict what way the wire or motor is going to spin.

As in the case of electric charges, it is convenient to introduce the concept of a magnetic field in describing the action of magnetic forces. Magnetic field lines for a bar magnet are pictured below.

Magnetic repulsion works on the principle of using electro magnets to levitate objects. Unlike normal magnets, electro magnets are created by the movement of current through wires. This means that the strength of the magnet can be changed by increasing or decreasing the current in the wire. As well as this, it is possible to change the poles of the magnet. This is important as it allows the magnet to both push and pull depending on the current. Using the idea that north repels north and south repels south, if the ground were to have the same pole as the electric magnet, then the electric magnet would hover. This idea can better be seen in figure 1.