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aug 1, 1590 - Hans and Zacharias Janssen- In 1590, they became known for inventing the compound optical microscope. This contributed to "The Cell Theory" by making it easier and more practical whilst observing cells.
Added to timeline:
cell theory
By
OJ Williams
21 Aug 2018
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0
1023
Date:
aug 1, 1590
Now
~ 436 years ago
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