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Magnet - Magnetic forces

Magnet - Magnetic forces: Encyclopedia II - Magnet - Magnetic forces

Magnetized items interact with other items in very specific ways. Magnet - Magnets and other magnets. If a magnet is brought close enough to another magnet, their fields will begin to interact in the following ways: If each magnets north pole is brought together, the magnets will repel one another (like poles repel) If the north pole of one magnet is brought to the south pole of the other magnet (or vice versa), the magnets will attract one another (opposite poles attract) Magnet - M ...

Magnet, Magnet - Introduction, Magnet - Physical origin of magnetism, Magnet - Permanent magnets, Magnet - Electromagnets, Magnet - Characteristics of magnetic materials, Magnet - Permanent magnets and dipoles, Magnet - North/south pole designation and the Earth's magnetic field, Magnet - Common uses for magnets, Magnet - How to magnetize materials, Magnet - How to demagnetize materials, Magnet - Types of permanent magnets, Magnet - Magnetic forces, Magnet - Magnets and other magnets, Magnet - Magnets and ferromagnetic materials, Magnet - Magnets and diamagnetic materials, Magnet - Magnets and paramagnetic materials, Magnet - Calculating the magnetic force, Magnet - Online references, Magnet - Printed references, Magnet - External articles

Magnet, Magnet - Calculating the magnetic force, Magnet - Characteristics of magnetic materials, Magnet - Common uses for magnets, Magnet - Electromagnets, Magnet - External articles, Magnet - How to demagnetize materials, Magnet - How to magnetize materials, Magnet - Introduction, Magnet - Magnetic forces, Magnet - Magnets and diamagnetic materials, Magnet - Magnets and ferromagnetic materials, Magnet - Magnets and other magnets, Magnet - Magnets and paramagnetic materials, Magnet - North/south pole designation and the Earth's magnetic field, Magnet - Online references, Magnet - Permanent magnets, Magnet - Permanent magnets and dipoles, Magnet - Physical origin of magnetism, Magnet - Printed references, Magnet - Types of permanent magnets, electromagnet, electromagnetism, electromagnetic field, neodymium magnet, diamagnetism, magnetic dipole, magnetic monopole, magnetism, molecular magnet, paramagnetism, single-molecule magnet

Magnet: Encyclopedia II - Magnet - Magnetic forces

Magnet - Magnetic forces

Magnetized items interact with other items in very specific ways.

Magnet - Magnets and other magnets

If a magnet is brought close enough to another magnet, their fields will begin to interact in the following ways:

If each magnets north pole is brought together, the magnets will repel one another (like poles repel)

If the north pole of one magnet is brought to the south pole of the other magnet (or vice versa), the magnets will attract one another (opposite poles attract)

Magnet - Magnets and ferromagnetic materials

If a magnet is brought close enough to a ferromagnetic material (that is not magnetized itself), the magnet will strongly attract the ferromagnetic material regardless of orientation. Both the north and south pole of the magnet will attract the other item with equal strength.

Magnet - Magnets and diamagnetic materials

By definition, diamagnetic materials weakly repel a magnetic field. This occurs regardless of the north/south orientation field.

Magnet - Magnets and paramagnetic materials

By definition, paramagnetic materials are weakly attracted to a magnetic field. This occurs regardless of the north/south orientation of the field.

Magnet - Calculating the magnetic force

Calculating the attractive or repulsive force between two magnets is, in the general case, an extremely complex operation, as it depends on the shape, magnetization, orientation and separation of the magnets. However, a formula exists for the simple case of the force between two magnetic poles:

[1]

where

F is force (SI unit: newton) m is pole strength (SI unit: weber) μ is the permeability of the intervening medium (SI unit: tesla meter per ampere) r is the separation (SI unit: meter).