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.Leucippus and corried his atomist through further devoping it rather exten sively.
all matter consists of invisble particles atoms differ in size shap mass positon and arrangemnt. -
That it was more changes than it was chargers.
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electron and used cathaderay tubes to deternine the charge to mass ratice of an electron to be 1.759 coulembs.
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Is a model of the atom devisedby ernest Rutherford directed the famous.
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develop auantum mechanics
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