Commissioned for the atrium of the brand spanking new Terminal 5 at Heathrow, Cloud is a digital sculpture conceived by art and design studio Troika. The five-meter structure is suspended above the escalators and consists of three layers. On top of an aluminum body sit 4638 dots that can turn from silver to black in one quick flick. Beneath that lies two electronic drivers, 134 distribution boards and over 16,500 feet of cable….