Question

Describe in detail the discovery of electrons.​

Answer 1

Explanation:

J. J. Thomson constructed a glass tube which was partially evacuated i.e. much of the air was pumped out of the tube. Then he applied a high electrical voltage between two electrodes at either end of the tube. He detected that a stream of particle (ray) was coming out from the negatively charged electrode (cathode) to positively charged electrode (anode). This ray is called cathode ray and the whole construction is called cathode ray tube. The schematic of a cathode ray tube

Answer 2

Answer:

Electron is discovered by J. J thomson in 1897 when he was studying the properties ray...it is discovered by using the croocks or cathode ray, tube. He demonstrated that cathode rays were negatively charged... Thomson realised that the accepted model of an atom did not account for negatively or pasitievely charged particles