Producing+Sound

=**How is sound produced?**=

Sound waves are produced by vibrations. They are mechanical longitudinal waves, meaning they need a medium to travel through, and they vibrate parallel to the direction of propagation. Faster vibrations produce waves with higher frequencies and shorter wavelengths. Slower vibrations produce waves with lower frequencies and higher wavelengths. This means that frequency and wavelength are inversely related. There are three different categories that sound waves fall into, Infrasonic - frequencies below the audible range. Audible - waves that lie within the range of the human ear, approximately 20 to 20,000 Hz. Ultrasonic - frequencies above the audible range.

Watch in this video as we demonstrate how sound is created through the vibration of tunning forks.

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