
Language
en
Duration
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Publisher of text edition
Project Gutenberg
Credits
Produced by Chris Curnow, Hazel Batey and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)
Release date
2012-02-26
Rights
Public domain in the USA.
Subjects

1843–1920
A pioneer of photography who mixed scientific precision with practical experimentation, he helped turn the medium into a serious field of study. His work ranged from photographic chemistry and color vision to astronomy and infrared imaging.
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