Born on: 18th Dec, 1856               Died on: 30th Aug, 1940.

J J Thomson was a British Physicist famous for his discovery of the first subatomic particle electron. His full name is Joseph John Thomson. He was a great teacher and an extraordinary Scientist. He received Noble Prize in the year 1906. Seven of his students and assistants also received Noble Prize.

Contributions:

1. J.J. Thomson discovered subatomic particle – electron.
2. He proposed the revolutionary theory that atoms were made up of smaller particles.
3. Proposed a theory on Atomic Structure – Watermelon Theory (First Theory on Atomic Structure).
4. Thomson got Noble Prize in 1906 for this research work on the electrical conductivity of gases and for the discovery of electrons.
5. G.P. Thomson, son of J.J. Thomson also got Noble Prize for the research work on electron diffraction.
6. J.J. Thomson’s one of the students Ernest Rutherford also got Noble Prize for the nuclear model.
7. He studied about conductivity in gases using Cathode Ray tube.