Engineering
Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering.
Sound
In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.
Sound
Sonorous metal blowing martial sounds,
At which the universal host up sent
A shout that tore hell's concave, and beyond
Frighted the reign of Chaos and old Night.
John Milton, Paradise Lost (1667; 1674), Book I, line 540.
Production
To those who clamor, as many now do, "Produce! Produce!" one simple question may be addressed:—"Produce what?" ...What can be more childish than to urge the necessity that productive power should be increased, if part of the productive power which exists already is misapplied? Is not less production of futilities as important as, indeed a condition of, more production of things of moment? ... Yet this result of inequality ... cannot be prevented, or checked, or even recognized by a society which excludes the idea of purpose from its social arrangements and industrial activity.
R. H. Tawney, The Acquisitive Society (1920), p. 39.