Nothing, that is, except an electric cell and a few drops of the unknown solution.
|electric cell |
A device, such as a battery, that is capable of changing some form of energy, such as chemical energy or radiant energy, into electricity. Also called voltaic cell. ◇ An electric cell that converts light energy into electrical energy using the photoelectric effect is called a photoelectric or photovoltaic cell; such cells are used in the generation of solar power and are called solar cells. See also galvanic.