Leopold Pfaundler von Hadermur (14 February 1839 – 6 May 1920) was an Austrian physicist and chemist born in

Innsbruck Innsbruck (; bar, Innschbruck, label=Bavarian language, Austro-Bavarian ) is the capital of Tyrol (state), Tyrol and the List of cities and towns in Austria, fifth-largest city in Austria. On the Inn (river), River Inn, at its junction with the ...

. He was the father of

pediatrician Pediatrics ( also spelled ''paediatrics'' or ''pædiatrics'') is the branch of medicine that involves the medical care of infants, children, adolescents, and young adults. In the United Kingdom, paediatrics covers many of their youth until the ...

Meinhard von Pfaundler Meinhard von Pfaundler (name sometimes given as Meinhard Pfaundler von Hadermur); (7 June 1872 – 20 June 1947) was an Austrian pediatrician born in Innsbruck. He was the son of Leopold Pfaundler. In 1890 he began his medical studies in Innsbruck ...

(1872–1947), and the father-in-law of pediatrician

Theodor Escherich Theodor Escherich (; 29 November 1857 – 15 February 1911) was a Germans, German-Austrians, Austrian pediatrics, pediatrician and a professor at universities in University of Graz, Graz and University of Vienna, Vienna. He discovered and de ...

(1857–1911).

Biography

He studied under chemist Heinrich Hlasiwetz (1825–1875) at Innsbruck, with

Justus von Liebig Justus Freiherr von Liebig (12 May 1803 – 20 April 1873) was a German scientist who made major contributions to agricultural and biological chemistry, and is considered one of the principal founders of organic chemistry. As a professor at t ...

(1803–1873) at the University of Munich, and with Henri Victor Regnault (1810–1878) and Charles Adolphe Wurtz (1817–1884) in Paris. In 1861 he received his doctorate, and in 1867 was appointed professor of physics at the

University of Innsbruck The University of Innsbruck (german: Leopold-Franzens-Universität Innsbruck; la, Universitas Leopoldino Franciscea) is a public research university in Innsbruck, the capital of the Austrian federal state of Tyrol, founded on October 15, 1669. ...

. In 1891 he succeeded Ludwig Boltzmann (1844–1906) as professor of physics at the University of Graz. In 1887 he became a full member of the Vienna Academy of Sciences.Pfaundler, Leopold (1839–1920), Chemiker und Physiker
at Kipnis de. Pfaundler is remembered today for his kinetic-molecular explanation of gas reactions under the condition of equilibrium. He was the inventor of a number of scientific apparatuses — devices he often utilized in classroom demonstrations. These included a temperature regulator (1863), a ''Stromkalorimeter'' (1869), a differential air thermometer (1875), a

seismograph A seismometer is an instrument that responds to ground noises and shaking such as caused by earthquakes, volcanic eruptions, and explosions. They are usually combined with a timing device and a recording device to form a seismograph. The output ...

(1897) and a distance meter (1915), to name a few. He is also credited with creating a device for optical demonstration of

Lissajous figures A Lissajous curve , also known as Lissajous figure or Bowditch curve , is the graph of a system of parametric equations : x=A\sin(at+\delta),\quad y=B\sin(bt), which describe the superposition of two perpendicular oscillations in x and y dire ...

(1873). In 1863–64 he performed a survey of the

Stubaier Alps The Stubai Alps (in German ''Stubaier Alpen'') is a mountain range in the Central Eastern Alps of Europe. It derives its name from the Stubaital valley to its east and is located southwest of Innsbruck, Austria. Several peaks form the border betwee ...

with

Ludwig Barth zu Barthenau Ludwig Barth zu Barthenau (17 January 1839 – 3 August 1890) was an Austrian chemist born in Rovereto. He studied under Justus von Liebig (1803-1873) in Munich, and in 1867 was appointed professor of chemistry at the University of Innsbruck. In ...

(1839–1890), and in 1864 he was the first person to ascend to the summit of the ''Hofmannspitze'' (3112m).

Selected written works

* ''Die Physik des täglichen Lebens, gemeinverständlich dargestellt'' (1906). * ''Die physik des täglichen Lebens mit 467 Abbildungen'' (1913). * ''Ueber die Wärmekapazität des Wassers und eine Methode den Ort ihres Minimums zu messen'' (1915). * ''Ueber einen neuen Distanzmesser'' (1915). * ''Chronik der Familie Pfaundler von 1486 bis 1915'' (1915). * ''Die Innsbrucker Studenten-Kompagnie 1859 und 1866'' (1917). * ''Das chinesisch-japanische GO-Spiel: eine systematische Darstellung und Anleitung zum Spielen desselben''. He also published ''Müller-Pouillet's Lehrbuch der Physik und Meteorologie'' ("

Johann Heinrich Jakob Müller Johann Heinrich Jakob Müller (30 April 1809, Kassel, Kingdom of Westphalia – 3 October 1875, Freiburg im Breisgau) was a German physicist. Biography From 1829 he studied mathematics and physics at the University of Bonn, where one of his ...

– Claude Pouillet's textbook of physics and meteorology"), (9th edition, 1886–98, 3 volumes).
Worldcat Identities

Awards and honors

Pfaundler’s 1867 publication entitled “Beiträge zur chemischen Statik” ��A Contribution to Chemical Statics”ref name="Pfaundler-translation"> was a major contribution to the kinetic theory of chemical reactions. This publication was honored by a Citation for Chemical Breakthrough Award from the Division of History of Chemistry of the American Chemical Society presented to the University of Innsbruck in 2016.

References

{{DEFAULTSORT:Pfaundler, Leopold Austrian chemists 19th-century Austrian physicists 1839 births 1920 deaths Academic staff of the University of Graz Academic staff of the University of Innsbruck Scientists from Innsbruck Chemists from Austria-Hungary Physicists from Austria-Hungary