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John napier created Napiers Bones
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A barometer was created near 1647
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close to 1801 the battery was created
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Refrideration was created in 1834
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in 2600 B.C. they created an abucus
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.