!!!Natterer, Johann August

b. Vienna, Oct. 19, 1821, 
d. Vienna, Dec. 25, 1900, chemist, physicist and physician, nephew of 
Johann  Natterer, brother of Josef  Natterer. N. used the compressed 
air chamber pump invented by J. Schembor (1777-1851) to experiment on 
the liquefaction of carbonic acid, a process fundamental to 
refrigeration engineering. N. was the first to achieve this (1844). 
With his brother Josef carried out successful experiments on 
photographic processing, achieved an increase in the sensitivity of 
Daguerreotype plates and made the first exposures and photographic 
reproductions in 1841.

!Literature
OeBL.



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