File:Bullard planetary dynamo model.svg

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Captions

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Bullard's self-sustained dynamo

Summary[edit]

Description
English: This model was introduced in the 1950's by british geophysist Edward Bullard as qualitative model for a self-sustained dynamo.

It is a fadaray disk that connected to an electromagnet, so it generates the magnetic field it's dived into. This model is used to understand the principle of a self-sustained dynamo, which is the source of the magnetic field on a planet.

A simple case : it is initially rotating freely, with i=0 and B=0, then an external, infinitesimal magnetic field is applied. The field is amplified by the system untill it reaches an equilibrium value. This disk is slowed down in the process, some kinetic energy is converted to magnetism.
Date
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Author Raminagrobis

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current11:32, 2 August 2021Thumbnail for version as of 11:32, 2 August 2021411 × 265 (57 KB)Raminagrobis (talk | contribs)Uploaded own work with UploadWizard

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