FIELD: gravimetry. SUBSTANCE: tested body with displaced center of mass and high reflectivity having shape of sphere is placed into transparent vacuum chamber in the form of cylinder with window for laser radiation filled with liquid. Laser interferometer with discrete converter having output connected to measurement system is used for registration. System to set tested body in motion incorporates electric contacts closed by melted metal body (gallium) inserted into vacuum chamber and electromagnets embracing lower base of vacuum chamber. EFFECT: improved accuracy of measurements. 1 dwg
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