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John Dalton pictures atoms as tiny, indestructible particles with no internal structure
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J.J. Thomson discovers the electron. He pictures electrons embedded in a sphere of positive electrical charge.
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Hantero Nagaoka suggest an atom has a central nucleus and electrons move in orbits.
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Atom has a small, dense, positively charged nucleus. Electrons move around the nucleus.
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.