Eventually, even the air inside your ears starts vibrating-and that's when you begin to perceive the vibrating drum as a sound. ![]() As the air moves, it carries energy out from the drum in all directions. If you bang a drum, you make the tight skin vibrate at very high speed (it's so fast that you can't usually see it), forcing the air all around it to vibrate as well. Sound is the energy things produce when they vibrate
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