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he elucidated
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First person to make good use of balance.
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compound is composed of exact proportions
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earth were not made of atoms
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Proposed that all matter was compossed of atoms, invisable and indestructable building blocks.
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discover electromangestism and electrochemisrty and electrosis
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which revoluntionized human understanding of atoms and neutrons.
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discovered radioactivity
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Discover the electron
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Discovered the two elements radium and polonium
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theory of relativity
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DIscovered a charge of a electron.
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He discovered the neutron in atoms.
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theory of hydrogen atom
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Desighned an experiment to use alpha particles emitted by a radioactivy element element as probes.