Johann Georg Tralles
He was born in Hamburg, Germany and was educated at the University of Göttingen beginning in 1783. He became a professor at the University of Bern in 1785. In 1810, he became a professor of mathematics at the University of Berlin.
In 1798 he served as the Swiss representative to the French metric convocation, and was a member of its committee on weights and measures. An iron "committee" meter, a duplicate of the prototype archive meter, was then given as a gift to Ferdinand Rudolph Hassler. From 1803 until 1805 these two men worked together on a topological survey of the Canton of Bern.
He was the inventor of the alcoholometer, a device for measuring the amount of alcohol in a liquid.
- "Der erste Ordinarius für Mathematik an der Universität Berlin", Eine Edition seiner Antrittsvorlesung, 1810.
- "Beytrag zur Lehre von der Elektrizität" Bern, Haller, 1786
- Ferdinand Rudolph Hassler and the United States Coast Survey, including his early work with Tralles.
- Tralles, Johann Georg, Berlin-Brandenburgische Akademie der Wissenschaften.
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