The wavelengths below describe the distance it takes various frequency waves to go through one complete cycle. One cycle is from when the wave starts and then goes up to its positive peak then down (passing the zero line) to its negative peak and then back up to zero.
Note: one Hertz (Hz) is defined as one cycle per second. (Thanks to Heinrich Rudolf Hertz)
20 Hz wavelength = 56.5 feet (This means that a 20 Hz wave travels 56.5 feet in order to complete one cycle!)
100 Hz wavelength = 11.3 feet
1,000 Hz (aka 1 kHz) wavelength = 1.13 feet
10,000 Hz (aka 10 kHz) wavelength = 1.356 inches
20,000 Hz (aka 20 kHz) wavelength = 0.678 inches
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