# Wavelength

Twice the half wavelength.

For a prismatic medium or plane wave, the wavelength $$\lambda$$ is related to the wave speed $$C$$ and the frequency $$f$$ by —

\begin{align} \label{eq:12701a} \lambda = \frac{C}{f} \end{align}

Also see —
Half-wave resonator
Full-wave resonator