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  1. Electromagnetism | Definition, Equations, & Facts | Britannica

    Feb 2, 2026 · Electromagnetism, science of charge and of the forces and fields associated with charge. Electricity and magnetism are two aspects of electromagnetism. Electric and magnetic forces can be …

  2. Physics - Electricity, Magnetism, Study | Britannica

    Feb 6, 2026 · Although conceived of as distinct phenomena until the 19th century, electricity and magnetism are now known to be components of the unified field of electromagnetism. Particles with …

  3. Magnetism | Definition, Examples, Physics, & Facts | Britannica

    Jan 30, 2026 · Magnetism, phenomenon associated with magnetic fields, which arise from the motion of electric charges. It can be an electric current in a conductor or charged particles moving through …

  4. Electromagnetic radiation - Electricity, Magnetism, Waves | Britannica

    Jan 23, 2026 · There was no apparent connection of electricity with magnetism, except that magnetic poles, like electric charges, attract and repel with an inverse-square law force.

  5. Physical science - Electricity, Magnetism, Physics | Britannica

    Within electricity and magnetism attempts at theoretical unification were conceived in terms of either gravitational-type forces acting at a distance, as with Ampère, or, with Faraday, in terms of lines of …

  6. Electromagnetism - Induction, Faraday, Magnetism | Britannica

    Dec 26, 2025 · Electromagnetism - Induction, Faraday, Magnetism: Faraday, the greatest experimentalist in electricity and magnetism of the 19th century and one of the greatest experimental …

  7. Electromagnetism - Discovery, Uses, Physics | Britannica

    Feb 2, 2026 · The founder of the modern sciences of electricity and magnetism was William Gilbert, physician to both Elizabeth I and James I of England. Gilbert spent 17 years experimenting with …

  8. Magnetic Fields, Forces, Interactions - Britannica

    Feb 2, 2026 · The practical application of magnetism in technology is greatly enhanced by using iron and other ferromagnetic materials with electric currents in devices like motors. These materials …

  9. Ampère’s law | Electricity, Magnetism, Physics | Britannica

    Ampère’s law, one of the basic relations between electricity and magnetism, stating quantitatively the relation of a magnetic field to the electric current or changing electric field that produces it.

  10. Discovery of electromagnetism | Britannica

    electromagnetism, Branch of physics that deals with the relationship between electricity and magnetism.