Question

what knowledge did JJ Thompson add to the atom?

thank you to anyone who helps!!

Answer 1

He discovered the ELECTRONS. which was first defined sub-atomic particle by anyone...

Answer 2

Ok so yeah here is what JJ Thompson added, I got these from my notes in science class, so here.


JJ Thompson discovered electrons '' plum pudding model'', positive sphere (pudding) with negative electrons (plums) throughout.