+Ernst Mach (1838–1916) was an Austrian physicist and philosopher, celebrated for his contributions to the study of [shock waves](/wiki/shock_wave) and for the concept of the Mach number. His philosophical work, deeply rooted in [Empiricism](/wiki/empiricism), profoundly influenced logical positivism and the scientific thinking of Albert Einstein.
+## See also
+- [Physics](/wiki/physics)
+- [Philosophy](/wiki/philosophy)
+- [Relativity](/wiki/relativity)
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