|Surf Colours ~
Images by Jim Grant in California. A spray haze of colour surrounds the surfers. Iridescence and diffraction? Or 'wavebows' and refraction? Scroll down.
All images ©Jim Grant, shown with permission
|The colours are those of a 'rainbow' but one created not by raindrops but by small spherical drops of seawater created by the surf. In the foreground the drops might actually be rolling on the sea surface.
Refraction therefore? Not entirely, when drops are small diffraction effects become noticeable in that the colours become less saturated and the bow also starts to widen.
Bows created by seawater have a slightly smaller radius than those from the purer water of raindrops. Sea water has a greater refractive index.