Question

define wavelength in short

Answer 1

Light is measured by its wavelength (in nanometers) or frequency (in Hertz). One wavelength. equals the distance between two successive wave crests or troughs. Frequency (Hertz) equals the number of waves that passes a given point per second.

Answer 2

the wavelength means the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.
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