FIELD: education, possible use as visual aid in course of physics.
SUBSTANCE: method includes using a spherical reservoir, inside which with a gap the core in form of a ball is positioned. The reservoir is filled with liquid with ionic conductivity, in the liquid, probes in form of electrodes of identical polarity are set as well as an auxiliary electrode of opposite polarity. The core and the electrodes are fastened independently from the reservoir. The reservoir is rotated at constant angular speed and probe current is recorded as a function of time. On basis of current extremes, the period and peak-to-peak amplitude of current oscillations are determined. Using the relation between peak-to-peak current oscillations and time, two peak-to-peak amplitude maximums, divided by the peak-to-peak amplitude minimum, are determined. The found maximums of peak-to-peak amplitude are matched with two modes of resonance excitation of system of oppositely directed vortices, which rotates as a single whole with possible coincidence of rotation period of the system with rotation period of the reservoir. Rotation period of the system is determined on basis of the period of current oscillations.
EFFECT: demonstration of shape of currents in the hollow of mantle of rotating planet with slowed rotation of solid core, and also research of stability of movement of liquid around an immobile element.
2 cl, 60 dwg
