What the ultimate Natural Units of material are?
How is electricity related to chemistry?
He concluded that cathode rays are composed of negative corpuscles (electrons) which are present in all kinds of metals, and he determined the charge to mass (e/m) ratio for the electron.
He suggested that the amount of charge on the electron is the same as that of hydrogen ion, H+, is, but of different nature.
He further suggested the mass of the electron to be about 1/2000 (more exactly 1/1836) of that of a hydrogen atom.
e = 4.80324e-10 esu or 1.602189(5)e-19 C (a natural unit)