This is a neat project where they make a very one dimensional rendering of actual WiFi signals. http://www.yourban.no/2011/02/22/immaterials-light-painting-wif

This is a neat project where they make a very one dimensional rendering of actual WiFi signals. http://www.yourban.no/2011/02/22/immaterials-light-painting-wifi/ http://www.yourban.no/2011/02/22/immaterials-light-painting-... Not quite the same, but the only real world instance that came to mind.