Angular momentum and the electromagnetic top

Pramana

GIANFRANCO SPAVIERI1²  GEORGE T GILLIES¹ 

[1] Department of Physics, University of Virginia, Charlottesville, VA 22901-4714, USA$$;Centro de Física Fundamental, Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101-Venezuela$$

关键词: Electromagnetic interaction;    magnetic dipole;    nonconservation of mechanical angular momentum;    Faraday’s law;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The electric charge–magnetic dipole interaction is considered. If $Gamma_{m em}$ is the electromagnetic and $Gamma_{m mech}$ the mechanical angular momentum, the conservation law for the total angular momentum $Gamma_{m tot}$ holds: $Gamma_{m tot}$ =$Gamma_{m em}$ + $Gamma_{m mech}$ = ${m const.}$, but when the dipole moment varies with time, $Gamma_{m mech}$ is not conserved. We show that the non-conserved $Gamma_{m mech}$ of such a macroscopic isolated system might be experimentally observable. With advanced technology, the strength of the interaction hints to the possibility of novel applications for gyroscopes, such as the electromagnetic top.

【 授权许可】

Unknown