This Austrian physicist and philosopher took empiricism to its logical conclusions by insisting that science should restrict itself to the description of phenomena that could be perceived by the senses. His ideas cleared the way for the development of the theory of relativity in physics, while his experimentation in ballistics served as a platform for the theory of flight 
This Austrian physicist and philosopher took empiricism to its logical conclusions by insisting that science should restrict itself to the description of phenomena that could be perceived by the senses. His ideas cleared the way for the development of the theory of relativity in physics, while his experimentation in ballistics served as a platform for the theory of flight and aerodynamics. For ten points, name this man, whose name we use to describe the ratio of the speed of an object to the speed of sound in the atmosphere.
This Austrian physicist and philosopher took empiricism to its logical conclusions by insisting that science should restrict itself to the description of phenomena that could be perceived by the senses.
Ernst {Mach}