Dictionary:Wavelength (λ)

{{#category_index:W|wavelength (λ)}} The distance between successive similar points on two adjacent cycles of a monochromatic wave, measured perpendicular to the wavefront.

$\lambda ={\frac {V}{f}}={\frac {2\pi }{\kappa }}={\frac {1}{\text{wavenumber}}}$,

where V=wave velocity and f=frequency. See Figure W-2. Dominant wavelength refers to the wavelength of the dominant frequency component.