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The most common description of the electromagnetic field uses two three-dimensional vector fields called the electric field and the magnetic field.These vector fields each have a value defined at every point of space and time and are thus often regarded as functions of the space and time coordinates.
Michael Faraday discovered the converse, that magnetism could induce electric currents, and James Clerk Maxwell put the whole thing together in a unified theory of electromagnetism. Maxwell's equations further indicated that electromagnetic waves existed, and the experiments of Heinrich Hertz confirmed this, making radio possible.
The electromagnetic force is one of the four fundamental forces of nature. It is the dominant force in the interactions of atoms and molecules. Electromagnetism can be thought of as a combination of electrostatics and magnetism, which are distinct but closely intertwined phenomena. Electromagnetic forces occur between any two charged particles.
Electromagnetic tensor; Electromagnetism and special relativity; Four-current; Four-potential; Mathematical descriptions; Maxwell equations in curved spacetime; Relativistic electromagnetism; Stress–energy tensor
Download as PDF; Printable version; In other projects Wikimedia Commons; Wikibooks; ... Electromagnetism is the set of phenomena associated with electricity and ...
Electricity and Magnetism is a standard textbook in electromagnetism originally written by Nobel laureate Edward Mills Purcell in 1963. [1] Along with David Griffiths' Introduction to Electrodynamics, this book is one of the most widely adopted undergraduate textbooks in electromagnetism. [2]
Green G, An Essay on the Application of Mathematical Analysis to the Theories of Electricity and Magnetism, T Wheelhouse, 1828. Heaviside O, Electromagnetic Theory, 3rd ed, 3 vols, The Electrician, 1893, 1899, 1912. Hertz H, Electric Waves: Being Researches on the Propagation of Electric Action with Finite Velocity through Space, Macmillan, 1893.
Continuous charge distribution. The volume charge density ρ is the amount of charge per unit volume (cube), surface charge density σ is amount per unit surface area (circle) with outward unit normal nĚ‚, d is the dipole moment between two point charges, the volume density of these is the polarization density P.