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    • Keywords


      Electromagnetic interaction, magnetic dipole, nonconservation of mechanical angular momentum, Faraday’s law

    • Abstract


      The electric charge–magnetic dipole interaction is considered. If $\Gamma_{\rm em}$ is the electromagnetic and $\Gamma_{\rm mech}$ the mechanical angular momentum, the conservation law for the total angular momentum $\Gamma_{\rm tot}$ holds: $\Gamma_{\rm tot}$ =$\Gamma_{\rm em}$ + $\Gamma_{\rm mech}$ = ${\rm const.}$, but when the dipole moment varies with time, $\Gamma_{\rm mech}$ is not conserved. We show that the non-conserved $\Gamma_{\rm mech}$ 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.

    • Author Affiliations



      1. Centro de Física Fundamental, Facultad de Ciencias, Universidad de Los Andes, Mérida, 5101-Venezuela
      2. Department of Physics, University of Virginia, Charlottesville, VA 22901-4714, USA
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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