Ernst Mach
Ernst Mach was born on February 18, 1838. See ranking, bio blurb, and everyone else born that day.
About Ernst Mach
Ernst Waldfried Josef Wenzel Mach ( MAHK; Austrian German: [ˈɛrnst ˈmax] ; 18 February 1838 – 19 February 1916) was an Austrian physicist and philosopher who contributed to the understanding of 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 honor. As a philosopher of science, he was a major influence on logical positivism and American pragmatism. Through his criticism of Isaac Newton's theories of space and time, he foreshadowed Albert Einstein's theory of relativity.