Wavelength
Wavelength The end-to-end physical measurement of a cycle in a repetitive signal, measured in metres (or convenient multiples). Audio wavelengths are generally in the range of 17mm to 17 metres (at air temperature 20C). The human eye responds to light in the wavelength range of 380 to 780 nanometres. The wavelength of a signal can be calculated by dividing the speed with which the signal propagates through a medium by its frequency.
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