GENERAL KNOWLEDGE

Detailed explanation-1: -On his return from America, he achieved the most brilliant work of his life – an original study of cathode rays culminating in the discovery of the electron, which was announced during the course of his evening lecture to the Royal Institution on Friday, April 30, 1897.

Detailed explanation-2: -Thomson invented the electron by playing with a tube that was Crookes, or cathode ray. He had shown that the cathode rays were charged negatively. Thomson realized that the accepted model of an atom did not account for the particles charged negatively or positively.

Detailed explanation-3: -Thomson, during a lecture at the Royal Institution in London, on 30 April 1897. “The atoms of the ordinary elements are made up of corpuscles and holes, the holes being predominant, ‘’ he continued. Thomson described his experiments with cathode rays to verify the existence of these subatomic corpuscles.

Detailed explanation-4: -Thomson, in full Sir Joseph John Thomson, (born December 18, 1856, Cheetham Hill, near Manchester, England-died August 30, 1940, Cambridge, Cambridgeshire), English physicist who helped revolutionize the knowledge of atomic structure by his discovery of the electron (1897).

Detailed explanation-5: -J.J. Thomson discovered the electron in 1897. An electron is a constituent of all the matter we are surrounded by.