## Download

- Vector graphics (SVG) download
*awesome for websites* - Pixel graphics (PNG) download
*awesome for presentations*

**Share** — copy and redistribute the material in any medium or format

**Adapt** — remix, transform, and build upon the material for any purpose, even commercially.

**Sharing and adapting of the illustration is allowed with indication of the link to the illustration.**

Phase velocity \( v_{\text p} \) of any point A on the wave, is the velocity with which this point propagates from A to B. Also drawn in is the wavelength \(\lambda\). This is here the distance between A and B. The phase velocity is given by the distance per time, so in this case wavelength \(\lambda\) per period \(T\):

`\[ v_{\text p} ~=~ \frac{\lambda}{T} \]`