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Physicists
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7
Science
9th Grade
04/20/2009
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Term
Chadwick
 Definition
Isolated neutrons by firing alpha particles.
Term
Rutherford
 Definition
Determined atoms are mostly empty space.
Term
Crookes
 Definition
Used cathode ray tube to identify electrons.
Term
Bohr
 Definition
Created solar system model of atom.
Term
Thomson
 Definition
Identified the proton using high voltage cathode ray tube.
Term
Einstein
 Definition
Realized light is in packets called photons.
Term
Mosley
 Definition
Used x-ray spectroscopy to determine number of protons in elements.
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