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1st person to say that matter couldn't be infinitely divided. Coined the term "atoms" & said atoms can not be created, destroyed or further divided.
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Completely denied the existence of atoms due to his personal ideas about nature
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Took Democritus ideas about matter and deviated them based of his personal scientific research. Revived the term "atom"
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Designed a series of CRT experiments at Cambridge to determine the ratio of the particle's charge to its mass.
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Designed an oil drop apparatus to determine the charge of the electron
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Studied how positively charged a- particles interacted with solid matter. Experiment to see if a-particles would be selected as they passed through a thin sheet of gold foil
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Demonstrated that the nucleus had another neutral subatomic particle, the neutron
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Chadwick won the 1935 Nobel prize for his discovery of the neutron
