![]() ![]() Where K is the coefficient of stiffness of the material (also called the Bulk modulus) and p is the density of the material. This is called the Newton-Laplace equation: The speed of sound is usually denoted by c, and a general equation can be used to calculate it. ![]() Calculating this is outside of the scope of this atom, but there are tables which tell you its value for materials. The shear modulus is a measurement of the elasticity or rigidity of a material. The speed of a compression wave is determined by the media’s compression capacity, shear modulus, and density, while the speed of the shear wave is only determined by the shear modulus and density. Compression waves can travel through any media, but shear waves can only travel through solids. There are two different kinds of sound waves: compression waves and shear waves. Sound travels faster in a solid than in a liquid, and faster in a liquid that in a gas. The general value given for the speed of sound is the speed of a sound wave in air, at sea level, at normal atmospheric pressure that number is 344 m/s. The speed of sound is dependent on the properties of the media the sound is travelling through. This medium can be a solid, liquid, gas, or even plasma. The speed of sound is the distance traveled in a unit of time by a sound wave through an elastic medium. ![]() The speed of sound is dependent on the properties of the material it travels through: it will travel faster through a solid than a liquid, and faster through a liquid than a gas. ![]()
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