Dynamo Theory

In geophysics, dynamo theory proposes a mechanism by which a celestial body such as the Earth or a star generates a magnetic field. The theory describes the process through which a rotating, convecting, and electrically conducting fluid can maintain a magnetic field over astronomical time scales.

Read more about Dynamo Theory:  History of Theory, Formal Definition, Kinematic Dynamo Theory, Nonlinear Dynamo Theory

Famous quotes containing the word theory:

    [Anarchism] is the philosophy of the sovereignty of the individual. It is the theory of social harmony. It is the great, surging, living truth that is reconstructing the world, and that will usher in the Dawn.
    Emma Goldman (1869–1940)