Johann August Natterer

Johann August Natterer (19 October 1821 – 25 December 1900) was an Austrian physician and chemist.

Born in Vienna, he was a nephew to naturalist Johann Natterer (1787–1843). In 1847, he obtained his medical doctorate from the University of Vienna, later practicing medicine in Wien-Leopoldstadt.[1]

Along with his brother Josef Natterer (1819–1862), he is remembered for pioneer experiments in the field of photography. In 1841, using a Voigtländer camera on daguerreotype plates that were prepared according to a chemical process developed by Franz Kratochwila, they were able to increase the sensitivity five-fold, and reportedly achieved exposure times as low as 5 to 6 seconds in clear weather.[2]

In the mid-1840s, using a compressed air chamber pump invented by J. Schembor (1777–1851), he was the first scientist to produce liquid carbon dioxide in significant quantities.[3][4] His name is associated with a sealed and constant volume vessel known as a "Natterer's tube".[5][6]

## References[edit]

1. ^ Österreichisches Biographisches Lexikon (biography)
2. ^ [1] A concise history of photography by Helmut Gernsheim
3. ^ [2] History of industrial gases By Ebbe Almqvist
4. ^ AEIOU Encyclopedia (biographical information and photo
5. ^ [3][permanent dead link] Contribution to the study of thermodynamic control systems, etc.
6. ^ Enciclopedia Treccani (biographical information)

Authority control

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* VIAF
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* Germany

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* Photographers' Identities
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* Germany