noun

• A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

  ‘Electrons produce a small magnetic field as they spin and orbit the nucleus of an atom.’

  More example sentences

  • ‘Sunspots are whirling masses of electrically charged gas formed by magnetic fields deep within the Sun.’
  • ‘Similarly, if you move a magnet near a wire, the magnetic field will cause electrons in the wire to move.’
  • ‘The spin of an electron generates a tiny magnetic field along the particle's spin axis.’
  • ‘The magnetic fields acted together with gravitational forces to keep the atoms trapped.’