INSTALLATION FOR STUDYING AN ELECTROMAGNETIC FIELD Russian patent published in 2007 - IPC G09B23/18 

FIELD: the invention refers to educational apparatus and may be used in laboratory practical work on physics course for studying and deepening knowledge of physical laws and phenomena.

SUBSTANCE: the installation has Helmholtz rings installed on a stand and attached in-series to a sound frequency generator, a measurer of phase difference, a switch, a recorder of electromotive force, a scale with divisions in degrees transversal to this axle, a mobile indicative coil, fixed on the axle of revolution with a handle and an arrow, and its outputs are connected with the first input of the measurer of difference, (n-1) fixed indicative coils which have different diameter, envelop the mobile indicative coil and installed on the stand in the middle between the Helmholtz rings in such a manner that their axles coincide with the axle of the Helmholtz rings. On the last fixed indicative coil a scale with divisions in degrees is fastened and an axle of revolution with a handle and an arrow the scale with divisions in degrees is fastened and an axle of revolution with a handle and an arrow is installed transversely to the axle of Helmholtz rings.

EFFECT: expands the field of studying.

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