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'Sub-Bragg diffraction' is what researchers at the Complex Photonic Systems group of the University of Twente’s MESA+ Institute for Nanotechnology call their surprising observations. An ‘energy dip’ can also occur when reflection takes place in regular crystal structures at ultra-low energy frequencies . Theoretically, the lowest energy at which this can take place has been unshakably fixed for almost a century, as predicted in the so-called Bragg conditions.

In 2010 there were 34.3 births among every thousand girls between the ages of 15 and 19.

Showcasing new tools for widespread development of quantum circuits made of mechanical parts, scientists from the National Institute of Standards and Technology have demonstrated a flexible, broadly usable technique for steadily calming the vibrations of an engineered mechanical object down to the quantum "ground state," the lowest possible energy level.

The Flexjet 25 Jet Card program (operated by Jet Solutions) is offering its first 10-hour summer jet card, the lowest amount ever featured on a jet card, starting at just under $50,000 through May 14.

Nick Price has matched the lowest round in Champions Tour history, eagling two of final four holes Friday for an 11-under 60 in the Toshiba Classic.