|Potto Home||Contact Us|
Next: John William Strutt (Lord Up: Biographies of Major Figures Previous: Galileo Galilei Index
Photo of Ernest MachAt first he received a professorship position at Graz in mathematics (1864) and was then offered a position as a professor of surgery at the university of Salzburg, but he declined. He then turned to physics, and in 1867 he received a position in the Technical University in Prague1.48 where he taught experimental physics for the next 28 years.
Mach was also a great thinker/philosopher and influenced the theory of relativity dealing with frame of reference. In 1863, Ernest Mach (1836 - 1916) published Die Machanik in which he formalized this argument. Later, Einstein was greatly influenced by it, and in 1918, he named it Mach's Principle. This was one of the primary sources of inspiration for Einstein's theory of General Relativity.
Yet, Mach's contributions to supersonic flow were not limited to experimental methods alone. Mach understood the basic characteristics of external supersonic flow where the most important variable affecting the flow is the ratio of the speed of the flow1.49 (U) relative to the speed of sound (c). Mach was the first to note the transition that occurs when the ratio U/c goes from being less than 1 to greater than 1. The name Mach Number (M) was coined by J. Ackeret (Prandtl's student) in 1932 in honor of Mach.
Next: John William Strutt (Lord Up: Biographies of Major Figures Previous: Galileo Galilei Index Created by:Genick Bar-Meir, Ph.D.
On: 2007-11-21 include("aboutPottoProject.php"); ?>