Abstract: The invention relates to a method and arrangement for the contactless determination of conductivity-influencing properties and their spatial distribution over the entire cross section of an electrically conductive substance moving in a primary magnetic field (B). The substance may be a liquid or a solid. A simultaneous measurement of a number of mechanical state parameters of the magnetic system is performed (three-dimensional components of the force and the torque), said parameters being variable by the effect of a secondary field on the magnetic system, the secondary field being produced on the basis of eddy currents induced in the substance by the primary field (B). To determine the spatial distribution of the property that is sought, the primary field is changed in intensity or form a number of times and a measurement of the state parameters is carried out for each change.

Abstract: The invention includes a method and an arrangement for influencing the flow of glass melts in a controlled way during the transfer from the melting furnace to a processing process. The simultaneous generation of electric and magnetic fields generates a force in the glass melt which boosts or inhibits the melt flow and acts substantially in the same direction as or in the opposite direction to the main direction of flow. It is in this way possible to control the melt flow without affecting the temperature of the melt. Consequently, the invention is suitable in particular for the accurately controllable feeding of a homogeneous glass melt to a glass production process.