At the JRC, quantum physicist Constantin Coutsomitros passed electronic pulses through his quantum walks experiment. This experiment involved a laser beam pointed at a crystal. The crystal split the beam into two entangled beams, and the original beam was absorbed by a special filter so that it does not interfere with the other two entangled beams. These two beams were connected and could “feel” the same interference. When one beam is altered, the other beam follows suit. Melanie King's Quantum Oscillographs visually represents the two entangled beams. Visually, the oscillographs should look exactly the same, however it is up to the observer to detect any differences. This oscillograph uses photo-acoustic technology, where sonified data moves a laser which is drawn upon a phosphorescent disc. This disc then re-emits the laser light slowly while rotating, allowing the lasers' intricate drawings to be seen.