Which are the strongest magnets?
Neodymium magnets: the super-strong ones. Neodymium is a rare earth metal and a special material: Combined with iron and boron it creates the currently strongest permanent magnets in the world.
The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
- Your instructor will demonstrate a magnet placed against cassette tape every produces magnetic field that is if opposite poles of two separate magnets are facing each other, both feel the same force but. North and south poles of two magnets attract each other, while north or repel other.
- A lodestone is a naturally magnetized piece of the mineral magnetite. They are naturally occurring magnets, which can attract iron. The property of magnetism was first discovered in antiquity through lodestones.
- An electric field has a force proportional to the amount of electric charge within the field, and the force is in the direction of the electric field. On the other hand, force of the magnetic field is proportional to the electric charge as well, but also takes into account the speed of the moving charge.
Inclination angle: The angle at which the magnetic field lines intersect the surface of the earth. This angle ranges from 0 degrees at the equator to 90 degrees at the poles. Intensity: The magnetic field also varies in strength over the earth's surface. It is strongest at the poles and weakest at the equator.
- Our planet's magnetic field is believed to be generated deep down in the Earth's core. The Coriolis force, resulting from the Earth's spin, also causes swirling whirlpools. This flow of liquid iron generates electric currents, which in turn produce magnetic fields.
- You can think of a magnet as a bundle of tiny magnets, called magnetic domains, that are jammed together. Each one reinforces the magnetic fields of the others. Each one has a tiny north and south pole. If you cut one in half, the newly cut faces will become the new north or south poles of the smaller pieces.
- The magnetic fields of these electrons aren't canceled out by another, oppositely-oriented, electron. As such they lend an overall magnetic field to the atom they inhabit. So, some metals are attracted to magnets because they are full of tinier magnets.
Updated: 2nd October 2019