Magnetic Pressure

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Magnetic Pressure

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The energy density associated with a magnetic field. </dd>
In a very real sense, there is energy stored in a magnetic field, and since energy per unit volume is equivalent to force per unit area or pressure, one may speak of the pressure exerted by a magnetic field. For plasma containment in a thermonuclear device, the magnetic pressure must be greater than the kinetic pressure of the plasma. See beta factor. A pressure of 1 atmosphere corresponds approximately to 5,000 gausses, and the pressure is proportional to the square of the field. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use