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From paper to glass, an impressive breakthrough
Translated from Spanish. View the original post
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In order to improve the transparency of the negative calotype, Abel Niépce de Saint Victor, Niépce's cousin, discovered in 1847 how to replace paper with glass.
In order for silver bromide to adhere to glass, he had the idea of mixing it with albumin (the white of the egg). Although slightly contrasted, the images became extremely accurate, forcing opticians to fine-tune even more efficient lenses.
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