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SOUNDWAVES CHICAGO HOW TO

The amplitude of a strong shock wave, as created in air by an explosion, decreases almost as the inverse square of the distance until the wave has become so weak that it obeys the laws of acoustic waves. In particular, shock waves travel faster than sound, and their speed increases as the amplitude is raised but the intensity of a shock wave also decreases faster than does that of a sound wave, because some of the energy of the shock wave is expended to heat the medium in which it travels. Because of this, shock waves propagate in a manner different from that of ordinary acoustic waves. Shock waves differ from sound waves in that the wave front, in which compression takes place, is a region of sudden and violent change in stress, density, and temperature. Shock wave, strong pressure wave in any elastic medium such as air, water, or a solid substance, produced by supersonic aircraft, explosions, lightning, or other phenomena that create violent changes in pressure. Solar flare and shock wave in Sun's atmosphere NASA/GSFC/SDO/AIA See all videos for this article

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SOUNDWAVES CHICAGO HOW TO

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