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<p>The <b>speed of sound</b> is the distance travelled per unit of time by a <a href="page.php?w=sound_wave">sound wave</a> as it propagates through an <a href="page.php?w=elasticity_%28solid_mechanics%29">elastic</a> medium. More simply, the speed of sound is how fast vibrations travel. At 20 C, the speed of sound in air is about 343 m/s, or  in  or one <a href="page.php?w=mile">mile</a> in . It depends strongly on temperature as well as the medium through which a <a href="page.php?w=sound_wave">sound wave</a> is propagating. At 0 C, the speed</p><p>
<a accesskey="3" href="page.php?w=Speed_of_sound&amp;p=2">3.Next</a>
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