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The idea of the atom was first thought of by Democritus. It was then adapted and expanded by many other scientists including Dalton, Thomson, and Rutherford.

Democritus was the person that came up with the idea of the atom, but he had no evidence to support his claims. media type="custom" key="16067460"

Dalton expanded this idea, and provided the first evidence that would support this theory. media type="custom" key="16067560"

Thomson found the electrons in atoms. Using his experiments with the cathode ray tube, he came to the conclusion that all atoms had electrons. media type="custom" key="16067588"

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Rutherford discovered the nucleus inside the atoms, he realized that they were dense and held most of the atom's mass. media type="custom" key="16067354"

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Through these processes and experiments, the concept of the atoms known today came about. Without these scientists and their realizations, much of our current technology would not have come about. All of these scientist built on each others hypothesis's and theories, and all contributed to the technology of our current society.