 In a typical experiment, two 100 mL beakers are filled with deionized water to roughly 3 mm below the edge of the beaker, and the water exposed to 15 kV direct current, with one beaker turning negative, and the other positive.After building up electric charge, the water then spontaneously rises along the thread over the glass walls and forms a "water bridge" between them.When one beaker is slowly pushed away from the other, the structure remains.