2012
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Hace 4 días · Learn about magnetic fields, their sources, properties, and effects. Explore how magnetic fields are represented by lines of force, vectors, and SI units, and how they interact with electric currents and charges.
16 de may. de 2024 · Learn about magnetism, the phenomenon associated with magnetic fields, which arise from the motion of electric charges. Explore the basic properties, sources, and effects of magnetic fields, as well as the types and examples of magnetic materials.
Hace 1 día · A magnetic field (sometimes called B-field) is a physical field that describes the magnetic influence on moving electric charges, electric currents,: ch1 and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.
13 de may. de 2024 · Geomagnetic field, magnetic field associated with Earth. It is primarily dipolar (i.e., it has two poles, the north and south magnetic poles) on Earth’s surface. Away from the surface the dipole becomes distorted. The field is variable, changing continuously, and its poles migrate over time.
6 de may. de 2024 · Our Sun is a huge ball of electrically-charged hot gas. This charged gas moves, generating a powerful magnetic field. The Sun's magnetic field goes through a cycle, called the solar cycle. Every 11 years or so, the Sun's magnetic field completely flips. This means that the Sun's north and south poles switch places.
23 de may. de 2024 · A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless particles that always move at the speed of light measured in vacuum.
3 de may. de 2024 · October 20, 2022. Read full story. How the universe got its magnetic field. By studying the dynamics of plasma turbulence, MIT researchers are helping to solve one of the mysteries of the origins of cosmological magnetic fields.
