magnetic field

SEE SYNONYMS FOR magnetic field ON THESAURUS.COM

noun

a region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle.
magnetic intensity.

Origin of magnetic field

First recorded in 1835–45

Words nearby magnetic field

magnetic disk, magnetic domain, magnetic drum, magnetic epoch, magnetic equator, magnetic field, magnetic field of the earth, magnetic field reversals, magnetic flux, magnetic flux density, magnetic head

Example sentences from the Web for magnetic field

British Dictionary definitions for magnetic field

magnetic field

noun

a field of force surrounding a permanent magnet or a moving charged particle, in which another permanent magnet or moving charge experiences a force Compare electric field

Scientific definitions for magnetic field

magnetic field

A field of force associated with changing electric fields, as when electric charges are in motion. Magnetic fields exert deflective forces on moving electric charges. Most magnets have magnetic fields as a result of the spinning motion of the electrons orbiting the atoms of which they are composed; electromagnets create such fields from electric current moving through coils. Large objects, such as the earth, other planets, and stars, also produce magnetic fields. See Note at magnetism.
See magnetic field strength.

Cultural definitions for magnetic field

magnetic field

A magnetic field is said to exist in a region if a force can be exerted on a magnet. If a compass needle is deflected when it is put at a particular location, we say a magnetic field exists at that point, and the strength of the field is measured by the strength of the force of the compass needle. The Earth, the sun, and the Milky Way galaxy all have magnetic fields. All known magnetic fields are caused by the movement of electrical charges. Electrons in orbit in atoms give rise to magnetic fields, so that every atom is, like the Earth, surrounded by a magnetic field. (See magnet and magnetism.)