Hans Hauswaldt

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Johann Christian Albert Hauswaldt (born June 20, 1851 in Neustadt-Magdeburg , † March 27, 1909 in Magdeburg ) was a German businessman, entrepreneur, photographer and crystallographer .

Life

After completing his school and professional training, Hans Hauswaldt worked in the family company Johann Gottlieb Hauswaldt, which was active in the field of cocoa and chocolate production, from around 1870, became a partner in the company after the death of his father Johann Albert Hauswaldt in 1887 and ran it together with his cousin Johann Wilhelm Hauswaldt . After his death in 1900, his nephew Georg Hauswaldt became his new partner.

Hauswaldt dealt with the photographic recording of crystal-optical phenomena. He worked closely with the Göttingen crystallographer Theodor Liebisch , who later became director of the Mineralogical-Petrographic Institute and Museum of the University of Berlin, who provided him with technical support and wrote the foreword to his self-published table volumes. His recordings are of a captivatingly high quality and are still used in most textbooks today. Hauswaldt was the Royal Prussian Councilor of Commerce and was awarded an honorary doctorate from the University of Göttingen in 1902 after the publication of his first volume .

On November 13, 1908, Hans Hauswaldt was admitted to the Leopoldina as a member ( matriculation no. 3266 ) .

He bequeathed his collection of specimens and original photo plates to the Mineralogical-Petrographic Institute and Museum of the University of Berlin.

Fonts

  • About an improvement of the Hofmeister mercury breaker . In: Annalen der Physik und Chemie, 301, 6, 1898, pp. 479-480 digitized
  • Interference phenomena on double refracting crystal plates in convergent polarized light. 33 plates, Magdeburg 1902
  • Interference phenomena on double refracting crystal plates in convergent polarized light. 80 plates, Magdeburg 1904
  • Interference phenomena on double refracting crystal plates in convergent polarized light . 72 plates, Magdeburg 1907/1908
  • with Daniel Vorländer : Axis images of liquid crystals . In: Treatises of the Imperial Leopoldine-Carolingian German Academy of Natural Scientists, 90, Halle 1909, 19 plates, pp. 105–120 digitized

literature

  • Albert Wangerin (Ed.): Leopoldina . Official organ of the Leopoldine-Carolinian German Academy of Natural Scientists. 44th issue. On commission at Wilh. Engelmann in Leipzig, Halle 1908, p. 97 ( biodiversitylibrary.org ).

Web links
personal data
SURNAME Hauswaldt, Hans
ALTERNATIVE NAMES Hauswaldt, Johann Christian Albert
BRIEF DESCRIPTION German businessman, entrepreneur, photographer and crystallographer
DATE OF BIRTH June 20, 1851
PLACE OF BIRTH Neustadt-Magdeburg
DATE OF DEATH March 27, 1909
Place of death Magdeburg