How Do Magnets Work


How do magnets work? What is a magnet? A magnet attracts iron, nickel, cobalt and steel objects due to its magnetic field. Ancient Greeks knew about magnetic qualities of objects and they were quite interested in studying those objects. Ancient Greeks wanted to find out how to use them in every day life and science. Those were the very beginnings of magnetic field researches.

Magnets are different in size and shape. It all depends on their purpose. A compass needle is one of our modern gadgets made of magnet. Magnetic field is the space around a magnet. Magnetic force is present within the magnetic field. It affects magnets placed in the magnetic field. Even if we remove the magnet, the magnetic field will not stop existing. Magnetic field direction depends on the resultant force direction. Magnetic field is created in the following way: if we have a wire with a current flow, the field will surround the wire. This tells us that magnetic field is produced by an electrical charge.

Magnetic Lines of Force

Magnetic lines of force never cross each other. They can come close to each other near the magnet poles, but they never intersect. If you are interested to learn how we use magnets in every day life, read more about compass and its mechanism.

Magnetic Induction

Magnetic Induction is a discovery made in 1831 by Michael Faraday, who found that EMF or a voltage could be induced into a conductor if it crosses magnetic force lines. This also happens if magnetic force lines cross the conductor. If there is a space/surface that is bounded by a conductor, and the magnetic flux changes, it will result in electric current induction. This is applied in cases when the strength of the field changes, or we move a conductor through the field. Based on that discovery, we can define electromagnetic induction as voltage production across the conductor that moves within a magnetic field.

Magnetic induction found its purpose in many modern systems, like inductors, graphics tablets, induction sealing, electrical generator, induction motors, Rowland ring, induction cooker, current clamps, synchronous motors, pickups, electromagnetic forming, solenoids, induction welding, transfer of wireless energy and transformers.

We hope this short story is enough to answer the question: How do magnets work? However, if you want to learn more about this subject, visit some specialized web sites. If you have more examples of magnetic fields, magnetic lines of force and magnetic induction, feel free to share them with us!

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