SOU ND
SOUND Vibrations that travel through air or another medium and can be heard when they reach a persons or animals ear is defined as sound USES OF MULTIPLE REFLECTION OF SOUND Megaphones and musical instruments Megaphones or loudhailers horns musical instruments are all designed to send sound in a particular direction without spreading it in all directions In these instruments a tube followed by a conical opening reflects sounds successively to guide most of the sound waves from the source in the forward direction
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