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1 jan 1920 ano - Comparison Bridge Microscopes

Descrição:

A comparison microscope is a device used to observe side-by-side specimens. It consists of two microscopes connected to an optical bridge, which results in a split view window. This was created by American Army Colonel Calvin Goddard

Adicionado na linha do tempo:

Data:

1 jan 1920 ano
Agora
~ 105 years ago

Imagens: