Thomson did much of his most important work in the late 1800's. His famous cathode ray experiments where conducted in 1897.
what is atom
JJ Thomson discovered electrons, which showed that atoms are not indivisible.
Joseph John Thomson or (JJ Thomson)
Plum-pudding model of atom.
J J Thomson
The plum pudding model by JJ Thomson.
not positive but jj thomson
mabby
JJ Thomson called his model of the atom the plum pudding model.
The evidence for JJ Thomson was that the plum pudding model could not predict why atoms absorbed and emitted spectral lines.
yes, he discovered electrons.
I'm pretty sure it was jj. Thompson but i coudnt be sure