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7 janv. 1000 - Reading Stone

Description:

The first vision aid, called a reading stone, is invented. It is a glass sphere placed on top of text, which it magnifies to aid readability.

Ajouté au bande de temps:

History of microscopes - Lily coulton

ByLily Coulton
5 mai 2023
0
0
114

Date:

7 janv. 1000
Maintenaint
~ Il y a 1026 ans
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