On the anomalous torque applied to a rotating magnetized sphere in a vacuum

TL;DR

This paper investigates the torque on a rotating magnetized sphere in a vacuum, emphasizing the importance of electromagnetic field angular momentum for accurate torque calculation.

Contribution

It highlights the necessity of considering electromagnetic field angular momentum within the sphere to correctly determine the torque.

Findings

Electromagnetic field angular momentum affects torque calculations.

Proper accounting of field angular momentum resolves anomalies in torque estimation.

The analysis clarifies the role of electromagnetic fields in rotating magnetized bodies.

Abstract

We analyze the torque applied to a rotating magnetized sphere in a vacuum. It is shown that for the correct determination of one of the torque's component the angular momentum of the electromagnetic field within the body should be taken into account.