Tuning fork set (440 Hz), resonance box
Function
Intended for experimental study, physics laboratory, carrying out physics and natural science experiments: Sound. Sound, a longitudinal mechanical wave. Sound wave. The propagation of sound through air (gaseous medium). Speed ¿¿of sound in different media. The propagation of sound through a metal rod (solid medium). The propagation of sound through water (liquid medium). The physiological qualities of sound. The sound, Doppler effect. What is the Doppler effect, etc.
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