Нужен перевод. the electron is an extremely small unit, and for thus reason it is not a convenient unit to use in the measurement of electric current or of quantity of electricity. the presence of an electric current in a circuit may be detected and its strength may be measured by a number of different methods. each method is based upon some effect which the current produces under given conditions. one of these effects is known as electrolytic dissociation. the properties of most conducting liquids are such that when a direct current is maintained in them, the constituent elements of the liquid arc separated. for example, when two copper plates are dipped in a solution of copper sulphate and a direct current is maintained in a liquid entering at one plate, the anode, and leaving at the other, the cathode, metallic copper leaves the solution and is deposited on the cathode
