Democritus was a Greek philosopher that lived for 90 years. He discovered that atoms we're small particles inside objects to give them their form. He did this by cutting stone in half, both halves still had the same properties And that's when he discovered that if we cut objects as small as possible, we will get to the atoms. (1 ene 460 año aC – 1 ene 370 año aC)
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1 ene 460 año aC
1 ene 370 año aC
~ 90 years