Julius of Hann

Julius Ferdinand of Hann (* 23. March 1839 in the lock house in waiting mountain whether the Aist (upper Austria); † 1. October 1921 in Vienna) is considered as a founder of the modern meteorology.

Hann visited the High School in Kremsmünster and studied mathematics, chemistry and physics at the University of Vienna. He put 1864 down the teaching profession examination for mathematics and physics and was between 1865 and a 1868 teacher at the upper six-form high schools in Vienna and Linz. 1865 were transferred it with Jelinek the editorship of the magazine for meteorology. This compelled later the appointment Hanns than provisional Adjunkt to k.k. Central institute for meteorology and geomagnetism. 1868 it habilitierte at the University of Vienna and 1873 the extraordinary professor for physical geography appointed itself.

From 1877 to 1897 Hann was a director of the central institute for meteorology in Vienna. On its initiative 1886 the observatory on the sunning view developed. Hann was from 1897 to 1900 a professor for meteorology at the University of Graz and from 1900 to 1910 professor for cosmic physics at the University of Vienna.

Its method of the different weighting from measured values is in mathematics also as Hann window admits (see window function). Since 1872 it was corresponding and since 1877 real member of the Academy of Sciences in Vienna.

Julius of Hann died at the 1. October 1921 in Vienna.


  • the earth as a whole: their atmosphere and Hydrosphäre. 1872
  • manual of the climatology. 1883
  • Atlas of the meteorology. 1887
  • text book of the meteorology. 1901

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| | * Literature of and over Julius of Hann in the catalog of the DDB



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