Outer Quantum Limits.

Reports on the research by Keith Schwab of the National Security Agency and his colleagues at the University of Maryland who have come close to catching the transition between classical and quantum physics. Brownian motion and its role in quantum fluctuations; How the researchers vibrated a sliver of gold and silicon nitride 0.01 millimeter long: How they cooled the beam; Calculations which suggest that the bean would have to be cooled to one milikelvin before zero point fluctuations could be seen; Alternative which is making a device for holding superconducting electrons.