Humans can only see a small patch of the electromagnetic spectrum – a mere 310nm range. Other animals can see into the ultraviolet and infrared, but none can see the wavelengths used for wireless networks.
Imagine if we could. Luis Hernan has given us a vision of what that might be like.
Hernan, a PhD student at the Newcastle University, UK, maps wireless signals in a room using what he calls the Kirlian Device. Then he translates the signals into color. In a reversal of the actual energy of colors, the strongest signals are converted to red, the weakest to blue.
“I call the images ‘spectres’ because wireless networks remind me of ghosts,” Hernan said. “They are there but you can’t see them with the human eye.”