ON GRAVITOMAGNETIC AND ROTATIONAL ANALOGUE OF THE HALL EFFECT: A POSSIBILITY TO DETECT LENSE-THIRRING FIELD OF EARTH

A possible new galvanogyroscopic effect which is the rotational (gravitomagnetic) analogue of Hall effect in electromagnetism has been proposed. As a consequence of a generalized Ohm's law, the effect of the Coriolis force on the conduction current is predicted to give rise to an azimuthal potential difference V_gg in a spinning rotor carrying radial electric current i_r. The potential difference developed by the galvanogyroscopic effect is proportional to angular velocity Ω and to the electric current both. An experiment is proposed for measuring the earth's gravitomagnetic field by using galvanogyroscopic effect. Due to the Lense-Thirring effect potential difference about 10^-19V will be developed in a current carrying conductor on a platform which is nonrotating relative to the distant stars.