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Physicists Attempting To Test 'Time Crystals' 231

ceview writes "This story at Wired seems to have lots of people a bit confused: 'In February 2012, the Nobel Prize-winning physicist Frank Wilczek decided to go public with a strange and, he worried, somewhat embarrassing idea. Impossible as it seemed, Wilczek had developed an apparent proof of "time crystals" — physical structures that move in a repeating pattern, like minute hands rounding clocks, without expending energy or ever winding down. ... [A] Berkeley-led team will attempt to build a time crystal by injecting 100 calcium ions into a small chamber surrounded by electrodes. The electric field generated by the electrodes will corral the ions in a "trap" 100 microns wide, or roughly the width of a human hair. The scientists must precisely calibrate the electrodes to smooth out the field. Because like charges repel, the ions will space themselves evenly around the outer edge of the trap, forming a crystalline ring.' The experimental set up is incredibly delicate (Bose Einstein Condensate), so it implies this perpetual motion effect can't really be used to extract energy. What is your take on it? It's unlike to upend anything, as the article suggests, because at a quantum level things behave weirdly at the best of times. The heavy details are available at the arXiv."
The Almighty Buck

Good News For US Fusion Research 149

zrbyte writes "Fusion research would get a major boost in a Department of Energy (DOE) spending bill approved today by the U.S. House of Representatives Committee on Appropriations. The panel rejected an Obama Administration proposal to cut funding for domestic fusion research in the 2013 fiscal year, which begins 1 October. It would also give more money than requested to an international collaboration building the ITER fusion reactor in France. This will allow the Alcator C-Mod fusion facility at the Massachusetts Institute of Technology in Cambridge to be kept open, which the Administration had proposed closing."

The Challenges of Tapping Blood Flow For Power 143

joshuarrrr writes "Researchers in Switzerland have tested small turbines designed to fit inside a human artery, like an implantable hydroelectric generator. The turbines can draw about a milliwatt of power, which would be enough to run a pacemaker. The problem is that the turbines tended to create turbulence, which can cause blood to coagulate into clots. Competing systems avoid the turbulence but have trouble generating enough power."

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