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Democritus belived all matter consistd of small particles that could not be divided. He called the particles atoms. He called them this because in greek this word means uncut or indivisble.
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John pictures atoms as tiny, indestructible particles, with no internal structure.
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He discoverd the electron. He pictures electrons embedded in a sphereof positive electric charge.
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He sugest that a atom has a central nucleus. Electons move in orbits like the rings around saturn.
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He states a atom has a dense, positively charged nucleus. Electrons move randomly in the space around the nucleus.
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Developed a mathamatical equations to describe the motion of electons in atoms. His work lead to the electron cloud model.
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He confirms the exsitence of neotrons that have no charge and protons that have a charge.
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Electrons move in spherical orbits at fixed distances from the nucules.
