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August 1, 2025
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mar 1, 1590 - 1590 – Early microscope

Description:

Zacharias Janssen and his son Hans place multiple lenses in a tube. They observe that viewed objects in front of the tube appear greatly enlarged. This is a forerunner of the compound microscope and the telescope.

Added to timeline:

Date:

mar 1, 1590
Now
~ 435 years ago