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This site gives an overview of the physics of sound through a series of links to relevant articles.
A few pages that have interactive elements to demonstrate what sound is.
Talks about the use of ultrasound, sound at frequencies above audible.
A fun activity about sound and vibrations to make a little toy that makes a sound like a bee. All you need is a two lollipop sticks, a rubber band, some card and some string.
A good explanation of how sound waves can interfere and affect what you hear. Includes details of a demonstration with a tuning fork.
An explanation of sound and how it relates to space.
Fun demonstration of air pressure with shaving foam and a vacuum pump.
When two sound waves of different frequency approach your ear, the alternating constructive and destructive interference causes the sound to be alternatively soft and loud - a phenomenon which is ...
The reverberant sound in an auditorium dies away with time as the sound energy is absorbed by multiple interactions with the surfaces of the room.
A simple explanation of why sound travels long distances at night. There are some attractive graphics.
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