Scientific

Wavelength

Definition

Wavelength is the distance between two consecutive identical points (such as crests) of a periodic wave, typically measured in meters or nanometers.

Explanation

Visible light spans roughly 380 nm (violet) to 700 nm (red). Radio waves can have wavelengths of hundreds of meters, while X-rays measure in tenths of a nanometer. Wavelength and frequency are inversely related through wave speed: λ = v/f. In fiber optics, 1,550 nm is the standard wavelength for long-distance data transmission.

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