geomagnetic electrokinetograph

geomagnetic electrokinetograph

[¦jē·ō·mag¦ned·ik i¦lek·trə·kə′ned·ə‚graf]
(engineering)
An instrument that can be suspended from the side of a ship to measure the direction and speed of ocean currents while the ship is under way by measuring the voltage induced in the moving conductive seawater by the magnetic field of the earth.
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