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Otto Hahn discovered that the world was made of atoms P.14
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Bohr suggested that the nucleus of an atom might act like a water droplet P.15
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Called this splitting of atoms fission P.16
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When scientists figured out that only some atoms fissioned and those atoms were U-235 P.123
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Trinity Site near Alamogordo, where the world's first atomic bomb exploded. P.183
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.