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Ernst Mach

Ernst Mach
Ernst Mach 01.jpg
Ernst Mach (1838–1916)
Born Ernst Waldfried Josef Wenzel Mach
18 February 1838
Brno, Moravia, Austrian Empire
Died 19 February 1916(1916-02-19) (aged 78)
Munich, German Empire
Residence German Empire, Austrian Empire
Citizenship Austrian
Nationality Austrian
Fields Physicist
Institutions University of Graz
Charles University (Prague)
University of Vienna
Alma mater University of Vienna
Doctoral advisor A. von Ettingshausen
Doctoral students Heinrich Gomperz
Ottokar Tumlirz
Other notable students Andrija Mohorovičić
Known for Mach number
Mach's principle
Shock waves
Mach waves
Mach reflection effects
Mach band
Criticism of Isaac Newton's bucket argument
Mach diamonds
Influences Andreas von Ettingshausen
Gustav Fechner
Carl Ludwig
Influenced Vienna Circle
Ludwig Boltzmann
Albert Einstein
Wolfgang Pauli
William James
Wilhelm Kienzl
Pierre Duhem
Signature
Notes
He was the godfather of Wolfgang Pauli. The Mach–Zehnder interferometer is named after his son Ludwig Mach, who was also a physicist. Marilyn vos Savant, the 1989 Guinness Book of Records person with the highest world IQ, is a descendant of Mach.

Ernst Waldfried Josef Wenzel Mach (/ˈmɑːx/; German: [ˈɛɐ̯nst maχ]; 18 February 1838 – 19 February 1916) was an Austrianphysicist and philosopher, noted for his contributions to physics such as study of shock waves. The ratio of one's speed to that of sound is named the Mach number in his honor. As a philosopher of science, he was a major influence on logical positivism, American pragmatism and through his criticism of Newton's theories of space and time, foreshadowing Einstein's theory of relativity.

Ernst Waldfried Josef Wenzel Mach was born in Brno-Chrlice (German: Chirlitz), Moravia (then in the Austrian empire, now part of Brno in the Czech Republic). His father, who had graduated from Charles University in Prague, acted as tutor to the noble Brethon family in Zlín, eastern Moravia. His grandfather, Wenzl Lanhaus, an administrator of the estate Chirlitz, was also master builder of the streets there. His activities in that field later influenced the theoretical work of Ernst Mach. Some sources give Mach's birthplace as Turas/Tuřany (now also part of Brno), the site of the Chirlitz registry-office. Peregrin Weiss baptized Ernst Mach into the Roman Catholic Church in Turas/Tuřany. Despite his Catholic background, he later became an atheist and his theory and life is compared with Buddhism.


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