English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Vector displacements expressed in spherical coordinates are proposed. Theycorrespond to electromagnetic fields in vacuum that globally rotate about anaxis and display many circular patterns on the surface of a sphere. The fieldsbasically satisfy the set of Maxwell's equations, but enjoy further propertiesthat allow them to be suitably interpreted as solutions of a plasma model thatcombines electrodynamics with the Euler's equation for fluids. Connection withmagnetohydrodynamics can also be established. The fields are extended withcontinuity outside the sphere in a very peculiar manner. In order to avoidperipheral velocities of arbitrary magnitude, as it may happen for a rigidrotating body, they are organized to form successive encapsulated shells, withsubstructures recalling successive ball-bearing assemblies. A recipe for theconstruction of these solutions is provided by playing with the eigenfunctionsof the vector Laplace operator. Some applications relative to astronomy arefinally discussed.

Electromagnetic Fields Simulating a Rotating Sphere and its Exterior