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7 jan 1000 ano - Reading Stone

Descrição:

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.

Adicionado na linha do tempo:

History of microscopes - Lily coulton

ByLily Coulton
5 mai 2023
0
0
116

Data:

7 jan 1000 ano
Agora
~ 1026 years ago
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