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Page explaining what a pressure vacuum is.
Explores the music made by a symphony orchestra, with historical facts, several sound samples and illustrations for each instrument group.
A comprehensive article explaining how the voice works, looking at how different parts of the body absorb certain sounds to how sound is created by the vocal chords.
Sound "quality" or "timbre" describes those characteristics which allow the ear to distinguish sounds which have the same pitch and loudness.
The conduction of electricity in thin gases in vacuum tubes was the key to the discovery of the electron in 1897.Description of the discovery of Cathode rays.
A Marvin and Milo activity about sound vacuum. All you need is a glass bottle, pipe cleaner, small bell, wine saver pump and stopper.
An excellent description of how Thermoses (Vacuum Flasks) work using heat transfer principles. From HowStuffWorks.com. An extremely good, informative site.
Read about how sound travels in the ocean, the SoFAR channel and one experiment to test how far could you hear a sound underwater.
A brief explanation why ion engines need a vacuum
This virtual reality Java piano lets you play the piano and have a little fun while learning the relationship between the sounds, music theory, musical scales, and the underlying math and physics of ...
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