Helmholtz's theorem

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Helmholtz's theorem

[′helm‚hōlt·səz ‚thir·əm]
(electricity)
(fluid mechanics)
The theorem that in the isentropic flow of a nonviscous fluid which is not subject to body forces, individual vortices always consist of the same fluid particles.
(mathematics)
The theorem determining a general class of vector fields as being everywhere expressible as the sum of an irrotational vector with a divergence-free vector.
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References in periodicals archive ?
To test whether passage-graves could resonate when the appropriate sound frequency was played in the chamber, the process was mathematically modelled using the Helmholtz theorem (see below).