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Proposed a mechanical universe with small solid masses in motion.
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He discover the relative weights of particles. He believed the atom was just a sphere.
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Proposed electric and magnetic fields filled the void.
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He discovered electrons or negatively charged particles.
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He found that atoms are mostly made of space and that each atom has a small condensed positively charged center. He called the center the nucleus. He also found that negatively charged partials where around the nucleus.
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Discovered the existence of isotopes through the use of a mass spectrograph.
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He found that electrons orbit around the nucleus, within energy levels.
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Released the first energy from the nucleus.
