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jul 26, 1844 - John Dalton born at Eaglesfield, England 1766

Description:

Found atoms made matter. Atoms of one element are similar but not identical to another element. Chemical reactions happen when atoms are moved around in whole number ratios.

Added to timeline:

24 Sep 2017
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Date:

jul 26, 1844
Now
~ 174 years ago

Images:

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