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in 1886 Eugen Goldstein discovers that atoms had positive charges
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in 1897 J.J Thomson discoverd the electron
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In 1908 Ernest Rutherford proved Thomson's raisin bread structure incorrect.
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In 1932, James Chadwick discovered a third type of subatomic particle, which he named the neutron.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.