shock wave

shock wave, wave formed of a zone of extremely high pressure within a fluid, especially the atmosphere, that propagates through the fluid at a speed in excess of the speed of sound. A shock wave is caused by the sudden, violent disturbance of a fluid, such as that created by a powerful explosion or by the supersonic flow of the fluid over a solid object. Propagating from the point of the disturbance, a shock wave carries energy and can have destructive effects as it impinges on solid objects. A shock wave decays rapidly with increasing distance from its point of origin, gradually changing into an ordinary sound wave. Continuous shock waves, such as those produced by supersonic aircraft, are of particular concern as they tend to recur along regular routes. Even after they have decayed into sound waves, thus losing their destructive force, they remain capable of creating noise levels harmful to human beings and animals.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on shock wave from Fact Monster:

  • Shock Waves - Starring Brooke Adams, Jack Davidson, Luke Halpin, Fred Buch, D.J. Sidney
  • aerodynamics: Creation of Shock Waves - Creation of Shock Waves Above speeds of Mach .7 the air flowing over the wing accelerates above the ...
  • tide - tide tide, alternate and regular rise and fall of sea level in oceans and other large bodies of ...
  • explosive: Classification of Explosives - Classification of Explosives Chemical explosives can be classified as low or high explosives. Low ...
  • EARTHQUAKES - Earthquakes are vibrations triggered by sudden rock movements deep underground, which cause Earth’s surface to shake. Major earthquakes can shatter wh

See more Encyclopedia articles on: Aviation: General