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Concept
Ernst Mach
Summary
Ernst Waldfried Josef Wenzel Mach (mɑːx , ɛʁnst ˈmax; 18 February 1838 – 19 February 1916) was an Austrian physicist and philosopher, who contributed to the physics of shock waves. The ratio of the speed of a flow or object to that of sound is named the Mach number in his honour. As a philosopher of science, he was a major influence on logical positivism and American pragmatism. Through his criticism of Newton's theories of space and time, he foreshadowed Einstein's theory of relativity.
Mach was born in Chrlice (Chirlitz), Moravia, Austrian Empire (part of Brno, in the Czech Republic). His father, who had graduated from Charles-Ferdinand University in Prague, acted as tutor to the noble Brethon family in Zlín in eastern Moravia. His grandfather, Wenzl Lanhaus, an administrator of the Chirlitz estate, was also master builder of the streets there. His activities in that field later influenced Ernst Mach's theoretical work. Some sources give Mach's birthplace as Tuřany (Turas, also part of Brno), the site of the Chirlitz registry office. It was there that Mach was baptised by Peregrin Weiss. Mach later became a socialist and an atheist, but his theory and life was sometimes compared to Buddhism. Heinrich Gomperz called Mach the "Buddha of Science" because of his phenomenalist approach to the "Ego" in his Analysis of Sensations.
Up to the age of 14, Mach was educated at home by his parents. He then entered a Gymnasium in Kroměříž (Kremsier), where he studied for three years. In 1855 he became a student at the University of Vienna, where he studied physics and for one semester medical physiology, receiving his doctorate in physics in 1860 under Andreas von Ettingshausen with the thesis Über elektrische Ladungen und Induktion, and his habilitation the following year. His early work focused on the Doppler effect in optics and acoustics. In 1864, he took a job as professor of mathematics at the University of Graz after he had turned down the position of a chair in surgery at the University of Salzburg to do so, and in 1866 he was appointed professor of physics.
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