How to Pronounce Johannes Gessner
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Mar 18, 1709 Zürich, canton of Zürich, Switzerland Died on 06 May 1790 (aged 81)
Swiss scientist
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About Johannes Gessner
- Johannes Gessner (18 March 1709 Zürich – 6 May 1790 Zurich) was a Swiss mathematician, physicist, botanist, mineralogist and physician.
- He is seen as the founder of the "Naturforschende Gesellschaft in Zürich". Gessner trained in Zürich under the physician Johannes von Muralt.
- He moved to Basel to study medicine, continuing his studies in 1726 and 1727 at the University of Leiden.
- There he became friendly with Albrecht von Haller, with whom he made a grand tour to Paris to finish their medical studies.
- There he wrote his diary, later published as Pariser Tagebuch.
- The two friends in 1728 studied mathematics under Johann Bernoulli and travelled through Switzerland. Gessner became a doctor in Basel in 1730, but soon changed to a scientific career.
- In 1733 he became a mathematics professor and in 1738 began to teach physics in Zürich.
- Gessner influenced many Swiss students, such as Johann Heinrich Rahn and Johann Georg Sulzer. Gessner produced publications on Swiss flora, and, as a follower of Carl Linnaeus, conceived the idea of creating illustrations which portrayed the Linnaean plant families.
- With the help of the painter and engraver Christian Gottlieb Geissler, he produced the 24-part Tabulae Phytographicae, which first appeared in 1795.
