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Concept
Christian Doppler
Summary
Christian Andreas Doppler (ˈdɒplər (ˈdɔplɐ); 29 November 1803 – 17 March 1853) was an Austrian mathematician and physicist. He formulated the principle – now known as the Doppler effect – that the observed frequency of a wave depends on the relative speed of the source and the observer.
Doppler was born in Salzburg (today Austria) in 1803. Doppler was the second son born to Johann Evangelist Doppler and Theresia Seeleuthner (Doppler). Doppler's father, Johann Doppler, was a third-generation stone mason in Salzburg. As a young boy, Doppler showed promise for his family's trade. However, due to his weak health, Doppler's father encouraged him instead to pursue a career in business. Doppler started elementary education at the age of 13. After completion, he moved on to secondary education at a school in Linz. Doppler's proficiency in mathematics was discovered by Sion Stampfer, a mathematician in Salzburg. Upon the recommendation of Sion Stampfer, Doppler took a break from high school to attend the Polytechnic Institute in Vienna in 1822. Doppler returned to Salzburg in 1825 to finish his secondary education. After completing high school, Doppler studied philosophy in Salzburg and mathematics and physics at the University of Vienna and Imperial–Royal Polytechnic Institute (now TU Wien). In 1829, he was chosen for an assistant position to Professor Adam Von Burg at the Polytechnic Institute of Vienna, where he continued his studies. In 1835, he decided to immigrate to the United States to pursue a position in academia. Before departing for the United States, Doppler was offered a teaching position at a state-operated high school in Prague, which convinced him to stay in Europe. Shortly after, in 1837 he was appointed as an associate professor of math and geometry at the Prague Polytechnic Institute (now Czech Technical University in Prague). He received a full professorship position in 1841.
In 1836, Doppler married Mathilde Sturm, the daughter of goldsmith Franz Sturm. Doppler and Mathilde had five children together.
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