FIELD: physics.
SUBSTANCE: device for detecting mutually inverse frequency-dependent surface effects has a reservoir with liquid, in which a specimen of an electroconductive solid body is partially immersed. The device also has a comparison electrode and an auxiliary electrode, a coil with a core made from ferromagnetic material. The device also has a periodic voltage generator which can be connected to the coil winding and a selective voltmetre which can be connected to the comparison electrode. The device also has a resonator in form of a horizontal beam lying over the level of the liquid. The centre of the beam is attached to the core on top and to the specimen under. The core is separated from the coil by a gap and is suspended on a spring. The part of the specimen immersed in the liquid is attached to a ballast which is separated from the reservoir by a gap.
EFFECT: possibility of detecting mutually inverse frequency-dependent surface effects on the same specimen of an electroconductive solid body, and wider range of elastic loading frequencies.
24 cl, 25 dwg
