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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).
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).
Sound is the phenomenon we experience when our ears are excited by vibrations in the gas that surrounds us. As an object vibrates, it sets the surrounding air in motion, sending alternating waves of compression and rarefaction radiating outward from the object.
27 lis 2015 · Nature of sound - Download as a PDF or view online for free.
Understanding the different ways that people talk about sound can help get to the heart of this conundrum. 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.
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The Nature of Sound Waves Read from Lesson 1 of the Sound and Music chapter at The Physics Classroom: http://www.physicsclassroom.com/Class/sound/u11l1a.html
