On 30th, April 1897 J.J Thompson discovered sub-atomic particle called Electron
Sir Thompson was studying about the properties of Cathode Rays. Cathode rays comprises stream of negatively charged particles observed in Electrical Discharge tube filled with gases. J.J Thompson charge to mass ratio experiment enabled him to discover the presence of negatively charged particle in atom called Electron. Electron is a sub-atomic particle of an atom, which revolves around centrally positioned positively charged Nucleus. Mass of Electron is about 1/1837 times mass of Hydrogen atom-smallest of all. Electron has charge of 1.602 x 10-19 Coulombs.
Sir Thompson was studying about the properties of Cathode Rays. Cathode rays comprises stream of negatively charged particles observed in Electrical Discharge tube filled with gases. J.J Thompson charge to mass ratio experiment enabled him to discover the presence of negatively charged particle in atom called Electron. Electron is a sub-atomic particle of an atom, which revolves around centrally positioned positively charged Nucleus. Mass of Electron is about 1/1837 times mass of Hydrogen atom-smallest of all. Electron has charge of 1.602 x 10-19 Coulombs.