Johann David Hahn (9 July 1729–9 March 1784) was a German educator.
Born in Heidelberg, Germany, he relocated to the Netherlands to pursue medicine and philosophy at Leiden University. After graduating with his doctorate, he began teaching at Utrecht University, working as Professor of philosophy, astronomy, and experimental physics (1753-1775), and then Professor of botany of chemistry (1759-1775).[1] He was elected as a member of the American Philosophical Society in 1770.[2]
After his time at Utrecht, he returned to Leiden and served as Professor of medicine at Leiden University, where he remained for the rest of his life. Hahn wrote prolifically on chemistry and toxicology and held public experiments and lectures on experimental physics and astronomy. He corresponded with many of his contemporary natural philosophers, including Benjamin Waterhouse and Benjamin Franklin.[3][4] After nearly a decade in Leiden, his health began to fail and he died.
^Raat, Alexander J. P. (2010). The Life of Governor Joan Gideon Loten (1710-1789): A Personal History of a Dutch Virtuoso. Uitgeverij Verloren. ISBN 978-90-8704-151-9.
^"APS Member History". search.amphilsoc.org. Retrieved 2021-06-07.
^"Letter from John David Hahn to Benjamin Waterhouse". www.digitalcommonwealth.org. Retrieved 2021-06-07.
^Bell (Jr.), Whitfield J. (1997). Patriot-improvers: 1743-1768. American Philosophical Society. ISBN 978-0-87169-226-9.
Johann DavidHahn (9 July 1729–9 March 1784) was a German educator. Born in Heidelberg, Germany, he relocated to the Netherlands to pursue medicine and...
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Kerry Committee report Hahn (2016), p. 25. Hahn (2016), p. 28. Hahn (2016), p. 28-29. Hahn (2016), p. 31-37. Hahn (2016), p. 61. Hahn (2016), p. 48–50. Gugliotta...
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March 7, 2019. "John Mulaney wanted to be like Conan O'Brien". Archived from the original on March 20, 2020. Retrieved March 20, 2020. Hahn, Valerie Schremp...
major at Johns Hopkins University for undergraduates. Astin has five children; three (David, Allen, and Ashley) with his first wife, Suzanne Hahn, and two...
original on October 27, 2021. Retrieved July 10, 2021. Hahn, Jason Duaine (June 10, 2020). "John Cena Donates $1 Million to Black Lives Matter: 'Be Brave...
of Press. ISBN 978-0-2262-0323-2. Forster-Hahn, Françoise (March 1976). "Recent Scholarship on Caspar David Friedrich". The Art Bulletin. 58 (1): 113–116...
the original on 17 April 2021. Retrieved 5 October 2020. David Gowland. "Biography of Baron John Maynard Keynes". LiberalHistory.org. Archived from the...
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been presented in October 1930 to the Vienna Academy of Sciences by Hans Hahn" (van Heijenoort:592); this abstract and the full paper both appear in van...
one." Scott Hahn, The Lamb's Supper: The Mass as Heaven on Earth, ISBN 0-385-49659-1. New York: Doubleday, 1999. Benedict XVI, Pope. "John, the Seer of...
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