The majority of the economic oscillations which we encounter seem to be explained most plausibly as free oscillations. Ragnar Frisch
Certain exterior impulses hit the economic mechanism and thereby initiate more or less regular oscillations. Ragnar Frisch
Supply and demand constantly determine the prices of commodities; never balance, or only coincidentally; but the cost of production, for its part, determines the oscillations of supply and demand. Karl Marx
With terrible jolts and oscillations the religious life of the world has run down 'the ringing grooves of change.' A smoother route may have been undiscoverable. At all events it was undiscovered. John Tyndall
The electroencephalogram represents a continuous curve with continuous oscillations in which... one can distinguish larger first order waves with an average duration of 90 milliseconds and smaller second order waves of an average duration of 35 milliseconds. Hans Berger
The ‘theory of control systems' in engineering is now a well-developed subject, making use of some remarkably powerful concepts and methods of analysis, especially in relation to problems of stabilization and the prevention of unwanted oscillations. Arnold Tustin