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If a sound source is moving through the transmission medium, the frequency of the emitted waves is shifted by Doppler effect. Frequency variations are measured and […]
The equipment allows to establish the speed of sound measuring the movement needed between the speaker and the microphone so that between the two waves, initially […]
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Kundt’s tube consists of a tube of plexiglass; a single-frequency sound source (pure tone) is applied to one of tube ends. Kundt used a metal rod […]
In this experiment, a standing ultrasonic wave in a liquid is depicted by means of a divergent laser light. The dependence of the brightness modulation of […]
This resonance apparatus is used to determine the wavelength and speed of sound in the air. This apparatus includes a plastic tube with a ruler, mounted […]
A sonometer is an apparatus for studying transversal vibrations of strings. The objective consists in showing the relationship existing between the frequency of the sound output […]
The device allows to study sound propagation in the vacuum.
Sound propagates only in a conduction medium. The oscillations of the sound source (bell) arrive at the receiver (ear) through the propagation medium (air).