J.J Thomson, an English physicist and a Nobel Laureate in Physics.

J.J Thomson J.J Thomson, an English physicist and a Nobel Laureate in Physics. And is credited and honoured with the discovery of the electron. which was the first subatomic particle to be discovered. Thomson managed to show that cathode rays were composed of previously unknown negatively charged particles (electrons). which he calculated and inferred might have smaller bodies than atoms and a substantial charge mass ratio. He is also credited for finding the first evidence for the existence of isotopes for stable elements.