Arc-en-Tarmac.

A faint mist of water hangs over East London Street Lane, bringing to life an evanescent rainbow in the shadows.

The smooth and familiar continuum of the rainbow is broken down at close range into 'corpuscles': some of the close water droplets streaking during the exposure. As the droplet passes through the critical angle where light is bent and dispersed into the familiar order of colours, the wave-like properties of light conspire to create interference patterns - revealing the phenomenon of the supernumary as the droplet falls to earth.