jan 1, 1894 - J.J Thomson
Description:
Cheetham Hill, England1894
In 1894 he began his research on cathode rays. In 1906 he began his research on positive rays which lead to him proving the existence of isotopes in a stable element. All of his research lead to the discovery of electrons.
Added to timeline:
Date:
jan 1, 1894
Now
~ 131 years ago