Ernst Mach — Austrian Physicist born on February 18, 1838, died on February 19, 1916
Ernst Waldfried Josef Wenzel Mach was a Czech-Austrian physicist and philosopher, noted for his contributions to physics such as the Mach number and the study of shock waves. As a philosopher of science, he was a major influence on logical positivism, American pragmatism and through his criticism of Newton, a forerunner of Einstein's relativity... (wikipedia)