Describe the effect of j. j. thomson’s discovery?

J. J. Thompson was the first scientist who discovered that atom is not the smallest particle in nature, but rather that there exists something which is a lot smaller and tinier than the atom himself. This tiniest particle came to be known as electron. This discovery was quite important because it was a first step towards creating a detailed model of the atom, something which was not possible prior to that. 

The answer is crop yield.