Cal physicists make a radio 10,000 times thinner than a human hair

Physicists at UC Berkeley say they have produced the world's smallest radio out of a single carbon nanotube that is 10,000 times thinner than a human hair.

Professor Alex Zettl led a team that developed the minuscule filament, which can be tuned to receive AM or FM transmissions.

The first song it played? "Layla" by Derek & the Dominos. Eric Clapton's unmistakable guitar riff can be heard on a scratchy recording of the nanoradio's output posted by Zettl online.