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Read about how sound travels in the ocean, the SoFAR channel and one experiment to test how far could you hear a sound underwater.
The basics of sound waves, including really useful animations of how sound travels
Good clear introduction to sound concepts with diagrams, including why you sound good singing in the shower!
A good site on how animals such as bats or dolphins see with sound (also known as echolocation ).
Diagrams showing how sound is reflected and standing waves.
An interesting page on how sound is refracted and examples of the effect this causes.
A good web page that highlights links for beginners about sound.
Microphones are transducers which detect sound signals and produce an electrical image of the sound
See sound waves travel through the air using a clever photographic trick called Schlieren photography.
An interesting site, with good diagrams, explaining how sound can be diffracted and how this affects what you hear.
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