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Tag Archives: sound
Horns
I did not realise that some vehicle horns really are exactly that: horns.
Tagged car, sound, transport
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Datalogging the lesson
My department recently bought some nifty portable dataloggers. I decided to test one out during my last two periods with 5PHC by measuring the volume of sound in the room during the lesson’s ninety minute duration. Because the volume of … Continue reading
Tagged lesson, sound, volume
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The loudest sound
Sound is created by vibrating objects. As an object, such as a loudspeaker’s diaphragm moves back and forth it compresses the air, causing changes in pressure. These changes in pressure cause your eardrum to move back and forth and these … Continue reading
Tagged sound
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Anechoic chamber
An anechoic chamber is one in which there are no echoes, they are used for making extremely sensitive sound measurements. Car manufacturers use them to test how much noise an engine makes at different speeds. The military use them to … Continue reading
Tagged sound
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The earliest recording
The International Herald Tribune has a story about the recent discovery of a sound recording that predates Edison’s famous “Mary had a little lamb” recording by more than 10 years!
Tagged sound
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