The electron, its isolation and measurement and the determination of some of its properties

by Robert Andrews Millikan

represents the number of molecules of such a gas per cubic centimeter at 0° C., 76 cm., we have

Or if

represent the number of molecules per cubic centimeter at 15° C. 76 cm., we should have to multiply the last number by the ratio of absolute temperatures, i.e., by

and should obtain then

Thus, even though the facts of electrolysis give us no information at all as to how much of a charge one electron