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The solar dynamo is a physical process that generates the Sun's magnetic field.It is explained with a variant of the dynamo theory.A naturally occurring electric generator in the Sun's interior produces electric currents and a magnetic field, following the laws of Ampère, Faraday and Ohm, as well as the laws of fluid dynamics, which together form the laws of magnetohydrodynamics.
On the largest scale, the Sun supports an oscillatory magnetic field, with a quasi-steady periodicity of 22 years. [ 2 ] [ 3 ] This oscillation is known as the Babcock-Leighton dynamo cycle, proposed by Robert B. Leighton , amounting to the oscillatory exchange of energy between poloidal and toroidal solar magnetic field ingredients.
The Atmospheric dynamo is a pattern of electrical currents that are set up in the Earth's ionosphere by multiple effects, mostly the Sun's solar wind, but also the tides of the Moon and Sun. [1] [2] The currents flow in circuits between the poles and the equator, but they are not well understood. [3]
Farther out, field lines can be significantly distorted by the flow of electrically conducting plasma, as emitted from the Sun (i.e., the solar wind) or a nearby star. [ 3 ] [ 4 ] Planets having active magnetospheres, like the Earth, are capable of mitigating or blocking the effects of solar radiation or cosmic radiation .
This means that dynamo theory was originally used to explain the Sun's magnetic field in its relationship with that of the Earth. However, this hypothesis, which was initially proposed by Joseph Larmor in 1919, has been modified due to extensive studies of magnetic secular variation , paleomagnetism (including polarity reversals ), seismology ...
Shares of France Telecom (NYS: FTE) bounced up by 8% today. For us shareholders, it's a welcome reprieve from a year-long slide. Even after this jump, France Telecom has lost 36% of its value over ...
In September 2020, Dailymotion partnered with Mi Video, the global video app developed by Xiaomi. [16] The partnership will help Mi Video to increase its engagement with its audience and continue its growth momentum. Access to Dailymotion's global and regional music, entertainment, sports and news catalogues will be provided to Mi Video users. [17]
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