Luis Hernan, an Architecture and Interaction Design student at Newcastle University, has captured the invisible landscape of wireless networks by using long exposure photography. He's created a device that translates the energy of wireless fields into different color LEDs based on their signal strength. The results are striking photographs of beams of light sweeping and swirling around a suggested figure, which the designer calls “spectres” as they remind him of ghosts and because they're invisible to the human eye. Hernan also developed an Android app; allowing anyone to photograph the invisible world surrounding these amazing signals. Find out more about his project on Digital Ethereal, or listen to this interview on BBC Radio