Tuning fork

Tuning fork

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Caption: Tuning fork vibrations disturbing water. A tuning fork is a piece of metal with two tines (prongs) that vibrate at a set frequency when struck. The vibrations of the tines agitate surrounding air molecules, which then agitate more distant air molecules and so on. This forms a sound wave. However, the vibrating air molecules cannot be seen. Instead, the fork can be placed in water. The disturbance of the water illustrates the agitation of the air molecules.

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Keywords: agitating, audible, audio, beaker, demonstration, disturbing, equipment, experiment, frequency, glass, metal, music, musical, notes, physical, physics, pitch, sound, sound wave, tine, tines, tuning fork, vibration, vibrations, water, waves

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