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1 ene 1920 año - Comparison Bridge Microscopes

Descripción:

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

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fecha:

1 ene 1920 año
Ahora mismo
~ 105 years ago

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