21 oct 1803 año - John Dalton
Descripción:
- John Dalton was born in Eaglesfeild, UK- Dalton theorized that all particles were combined in set ratios that could not be altered. He proved this by combining oxygen with nitric acid and placing them in a container with water and leaving it covered. He would uncover that particles themselves had set ratios, but after being combined, that ratio would not be the same any more.
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fecha:
21 oct 1803 año
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~ 222 years ago