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apr 22, 1614 - Tech: John Napier
Description:
John Napier: invents a system of moveable rods (Napier's Rods) based on logarithms which were able to multiply, divide and calculate square and cube roots
Added to timeline:
12 Nov 2017
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1020
Myopia (Linear Life)
Date:
apr 22, 1614
Now
~ 410 years ago