Ernst Waldfried Josef Wenzel Mach was a Czech 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. Wikipedia
Born: February 18, 1838, Brno, Czechia
Died: February 19, 1916 (age 78 years), Vaterstetten, Germany
Influenced by: Isaac Newton, Immanuel Kant, Richard Avenarius, and more
Influenced: Albert Einstein, Rudolf Carnap, Ludwig Wittgenstein, and more
Children: Ludwig Mach and Caroline Mach