Hydriodic acid, its electrolyses
Hydrocyanic acid, its electrolyses
Hydrofluoric acid, not electrolysable
Hydrogen, brush in
—— positive and negative brush in
—— —— discharge in
Hydrogen and oxygen combined by platina plates
—— spongy platina, .
Ice, its conducting power
—— a non-conductor of voltaic currents
Iceland crystal, induction across