Monday, April 16, 2012

The Antidynamo Theorum from Wikipedia

Antidynamo theorem

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In physics and in particular in the theory of magnetism, an antidynamo theorem is one of several results that restrict the type of magnetic fields that may be produced by dynamo action.
One notable example is Cowling's antidynamo theorem which states that no axisymmetric magnetic field can be maintained by dynamo action. It is also known that two-dimensional magnetic fields are forbidden.
The impact of the known anti-dynamo theorems is that successful dynamos do not possess a high degree of symmetry.

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