Measurement of Dynamic Behavior of the Thermomagnetic Gas Torque Effect

Experiments in which a modulating magnetic field has been superimposed on the steady magnetic field necessary to observe the thermomagnetic gas torque effect have yielded a twofold behavior. For magnetic fields below that for maximum torque, a frequency-dependent torque reduction $\Delta N$ is observed. For magnetic fields equal to or somewhat greater than that for maximum torque, a second effect is superimposed on the first: an absorptionlike peak which occurs at frequencies proportional to the magnetic field strength.