Sound
Sound is
produced by the vibrations of an object or mechanism and transmitted in the
form of waves—alternating increase and decrease in pressures. It radiates
outward through a material medium of molecules, more or less like the ripples
spreading out on water after some he7vy object has been thrown into it. The
frequency of sound is determined by the number of times the vibrating waves
undulate per second. The Slower the cycle, the lower...
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