Light Rain by Troika

I just seriously love cool lighting - especially light as art. This installation by Troika  debuted at the Shanghai World Expo in 2010.

The source of both, the sound and the droplets of light, are small engines suspended from the ceiling above - each carrying a simple lens, a motor and a LED that is moved rhythmically closer to and further away from the lens, hence projecting a drop of light down onto the floor that rhythmically grows and radiates outwards reminiscent of a rain drop hitting the ground. 

I can only imagine how wonderful it must have been to be able to walk underneath this as the droplets of light dribbled down around you onto the floor. Very, very cool!