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Videos
Learn about magnetic fields and interactions between magnetic poles.
Video: Encyclopædia Britannica, Inc.
The use of magnetic fields to generate electric current.
Video: Science in Seconds (www.scienceinseconds.com) (A Britannica Publishing Partner)
Learn about diamagnetism.
Video: © MinutePhysics (A Britannica Publishing Partner)
The process by which some elements are able to escape from Earth's atmosphere into...
Video: © MinuteEarth (A Britannica Publishing Partner)
Learn about the dependence of magnetic properties on temperature.
Video: © MinutePhysics (A Britannica Publishing Partner)
Learn about an experimental elastic surface with an array of adjustable micropillars...
Video: © Massachusetts Institute of Technology (A Britannica Publishing Partner)
Magnetic fields and the levels of magnetism of particles, atoms, crystals, and domains....
Video: © MinutePhysics (A Britannica Publishing Partner)
The multiple north poles that exist on Earth: the geographic North Pole, the magnetic...
Video: © MinutePhysics (A Britannica Publishing Partner)
An overview of solar flares.
Video: University College Cork, Ireland (A Britannica Publishing Partner)
Magnetic fields in a sunspot pair, as observed by the Helioseismic Magnetic Imager...
Video: NASA/GSFC/SDO/HMI
Images
A permanent magnet (such as a bar or disk magnet) possesses a magnetic field by virtue...
© Merriam-Webster Inc.
Figure 9: A small sample of copper in an inhomogeneous magnetic field (see text).
Courtesy of the Department of Physics and Astronomy, Michigan State University
Figure 4: Some of the lines of the magnetic field B from the small current...
Courtesy of the Department of Physics and Astronomy, Michigan State University
Some lines of the magnetic field B (blue) for an electric...
Courtesy of the Department of Physics and Astronomy, Michigan State University
Figure 11: Magnetic field B of two current loops with currents in opposite...
Courtesy of the Department of Physics and Astronomy, Michigan State University
Figure 12: Magnetic field B of two current loops with currents in the same...
Courtesy of the Department of Physics and Astronomy, Michigan State University
Figure 2: Radiation fields in which vectors {E vector} and {B vector} are perpendicular...
Encyclopædia Britannica, Inc.
Magnetic field of a long wire. (A) An end view, with the current flowing toward the...
Courtesy of the Department of Physics and Astronomy, Michigan State University
Figure 9: Magnetic field lines around a straight current-carrying wire (see text).
Encyclopædia Britannica, Inc.
A magnetic field produced by a small section of wire with electric current i.
Courtesy of the Department of Physics and Astronomy, Michigan State University
Figure 4: Demonstration of Faraday's and Lenz's laws.
Courtesy of the Department of Physics and Astronomy, Michigan State University
The direction a gyrocompass points is independent of the magnetic field of the Earth...
Encyclopædia Britannica, Inc.
Figure 3: Maximum zero-voltage (Josephson) current passing through a junction by...
Encyclopædia Britannica, Inc.
Basílica de Nuestra Señora de los Ángeles en Cartago, Costa Rica.
© manx_in_the_world—iStock/Getty Images
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