Abstract
We prove that an axisymmetric stationary dynamo for the Faraday disc in which the B-field is continuous across the disc's boundary is impossible. The proof suggests that the same conclusion should hold for any stationary dynamo, axisymmetric or not, in a conducting medium with a sharp boundary of generic shape. The case of a spherical shell is an important exception due to its extreme symmetry. This note complements an earlier one (1995 Physica Scripta 52 60).
Export citation and abstract BibTeX RIS