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

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe th ...

. Born in

Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...

, he was a nephew to naturalist Johann Natterer (1787–1843). In 1847, he obtained his medical doctorate from the

University of Vienna The University of Vienna (german: Universität Wien) is a public research university located in Vienna, Austria. It was founded by Duke Rudolph IV in 1365 and is the oldest university in the German-speaking world. With its long and rich histor ...

, later practicing medicine in Wien-Leopoldstadt. Along with his brother Josef Natterer (1819–1862), he is remembered for pioneer experiments in the field of

photography Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is employed ...

. In 1841, using a
Voigtländer camera
on

daguerreotype Daguerreotype (; french: daguerréotype) was the first publicly available photographic process; it was widely used during the 1840s and 1850s. "Daguerreotype" also refers to an image created through this process. Invented by Louis Daguerre an ...

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. 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 Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...

in significant quantities. His name is associated with a sealed and constant volume vessel known as a "Natterer's tube".Enciclopedia Treccani
(biographical information)

References

{{DEFAULTSORT:Natterer, Johann August 1900 deaths 1821 births Scientists from Vienna University of Vienna alumni Austrian chemists