"Named after the Austrian physicist Ernst Waldfried Josef Wenzel Mach (1838-1916) who first described it in 1865 5. Mach also worked on shock waves, later given the well-known speed of sound Mach number."
"Named after the Austrian physicist Ernst Waldfried Josef Wenzel Mach (1838-1916) who first described it in 1865 5. Mach also worked on shock waves, later given the well-known speed of sound Mach number."