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Displays

Submission + - Tangible display makes 3D touchable 2

moon_monkey writes: Researchers in Japan have developed a display that makes 3D objects solid enough to grasp. The system, created by engineers at Japan's NTT, combines a 3D display with a haptic glove, making 3D items that look real but also feel solid to touch. Two cameras are used to image an object, to make the 3D image. A computer also uses this to render a solid representation. It could be used to inspect products remotely, or even to shake hands with someone on the other side of the world, the researchers say
Math

Submission + - Faster integer multiplication

origins writes: On the STOC 2007,thesis about faster integer multiplication was submitted. According to the thesis,multiplication can be calculated faster than ever. Schönhage&Strassen algorithm was known as fastest(O(n log n log log n)) but now Martin Fürer algorithm was((n log n 2^O(log* n)). improvement of multiplication algorithm after decades is quite interesting.
Martin Fürer's homepage
The thesis
Power

Creating Power From Wasted Heat 186

Roland Piquepaille writes "Today, about 90 percent of the world's electricity is created through an indirect and inefficient conversion of heat. It is estimated that two thirds of the heat used by thermoelectric converters are wasted and released. But now, researchers from the University of California at Berkeley have found a new way to convert this wasted heat into electricity by trapping organic molecules between metal nanoparticles. So far, this method of creating electricity creation is in its very early stage, but if it can scale up to mass production it may lead to a new and inexpensive source of energy."

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