physics combined


atomic structure

plum pudding model JJ thompson

Plum pudding model of the atom, one big positive proton, with little electrons on top, like a cookie or a plum pudding.he suggested that the atom consisted of positive 'dough' with a lot of negative electrons stuck in it.

Alpha radiation beamed to a thin piece of gold foil which is in a scintillation screen.rutherfield model

he directed a beam of alpha particles at a thin gold sheet. there was deflections of the alpha particles


suggested that the electrons orbited


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