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Sound is a physical disturbance in the medium through which it is propagated. Although the most common medium is air, sound can travel in any solid, liquid, or gas. In air, sound consists of localized variations in pressure above and below normal atmospheric pressure (compressions and rarefactions).
introduction. Sound is a longitudinal, mechanical wave. Sound can travel through any medium, but it cannot travel through a vacuum. There is no sound in outer space. Sound is a variation in pressure. A region of increased pressure on a sound wave is called a compression (or condensation).
One definition 1 describes the wave nature of sound: Vibrations transmitted through an elastic material or a solid, liquid, or gas, with frequencies in the approximate range of 20 to 20,000 hertz.
Sound waves are longitudinal waves of compression and rarefaction in which the air molecules move back and forth parallel to the direction of wave travel centered on an average position, resulting in no net movement of the molecules. When these waves strike another object, they cause that object to vibrate by exerting a force on them.
outlines the basic principles of sound and its measurement. NATURE OF SOUND Origin of sound Sound is a sensation produced in the ear and brain by variations in the pressure of the air. These pressure variations transfer energy from a source of vibration. Suitable vibrations in the air can be caused by a variety of
The nature of sound - Santa Clara University Vibration travels in solids as structural borne waves. Sound waves are generated by anything that vibrates — a vibrating object causes the air next to it to vibrate, and the vibration is …
The mathematical theory of sound propagation began with Isaac Newton (1642– 1727), whose Principia 9 (1686) included a mechanical interpretation of sound as being “pressure” pulses transmitted through neighboring fluid particles.
