least. at the beginning of the twentieth century scientists opened the door to an unknown and highly mysterious world the in a structure of atoms. they found electrons protons and a range of new subatomic particles. but something strange happened in their experiments. it made scientific history as run shell explains. and begin to realize and saves began to realize that there was always sort of a. thing i mean the charge for leaving. this simple electricity i've had two metal plates hanging on abroad as soon as electrical voltage was applied to the rod the plates moved past because they had the same type of charge. the ways of the plates pushed them back into their