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Science with Rina. Sound Frequency and Wavelength

Video illustration to Sound Wavelength Calculator. We’ll play several sounds and show you their frequency and wavelength. 220 Hz or vibrations per second. 440 Hz or vibrations per second. 880 Hz or vibrations per second. The number of these vibrations per second is called the frequency, which is measured in hertz. The period is the duration of time in one vibration or cycle and thus it is the reciprocal of the frequency. The wavelength is the distance over which the wave’s shape repeats. It is inversely proportional to frequency of the wave if we assume that the wave is moving at a fixed speed. Assuming that sound travels at the speed of 343 meters per second, we can calculate the wavelength of notes we played earlier: The wavelength of this note is 78 cm or 2.56 feet. The wavelength of this note is 39 cm or 1.28 feet. The wavelength of this note is 19.5 cm or 0.64 feet. The interval between one musical pitch and another with double its frequency is called an octave. Music from YouTube Free Audio Library “Les Toreadors” from Carmen by Georges Bizet Ersatz Bossa by John Deley and the 41 Players

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