AbstractsPhysics

Quincke was the first to make observations on the electrification of liquid-gas interfaces. He found that the passage of an electric current through a capillary tube containing water caused a movement of the water surface, which was exactly proportional to the quantity of electricity passed. He also noted that the passage of a current through a liquid containing gas bubbles caused the latter to move towards an electrode. In his experiments the motion of these air bubbles was investigated in narrow glass capillary tubes, and the bubbles were found to move towards the anode when submerged, but towards the cathode when the water was replaced by turpentine. fr