Shortly before dusk in Spring 2004 the Sky Ear structure will be released from its ground moorings and slowly float up into the sky sampling the electromagnetic spectrum as it rises, rather like a vertical radar sweep.

This non-rigid “cloud”, made up of several hundred glowing helium balloons will be embedded with mobile phones. The balloons will contain miniature sensor circuits (simple gaussmeters) that detect levels of electromagnetic radiation at a variety of frequencies. When activated, the sensor circuits will cause ultra-bright coloured LEDs to illuminate. The cloud will glow and flicker brightly as it passes through varying radio and microwave spaces.

Via Space and Culture