"All we have yet discovered is but a trifle in comparison with what lies hid in the great treasury of nature."
-Antoni van Leeuwenhoek
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I did! It was an origami microscope, with a single simple lens added. Here's what it looks like:
Imagine trying to cope with a pandemic like COVID-19 in a world where microscopic life was unknown. Prior to the 17th century, people were limited by what they could see with their own two eyes. But then a Dutch cloth merchant changed everything.
Births
1728 - Johann Heinrich Lambert, German scientist
At last, you'll learn how to pronounce "Leeuwenhoek"!