Since the dawn of Kinect hacking, we've seen cameras strung together (or rotated) to create 3D, video game-like environments, while others have tweaked it for headtracking. Others, still, have used it for teleconferencing (albeit, the flat, two-dimensional variety). Now, a team of researchers have gone and thrown it all together to achieve 3D video chats, and if we do say so, the result is greater than a sum of its parts. The group, based out of UNC-Chapel Hill, uses 3D mapping (and at least four Kinects) to render the video, and then employs headtracking on the receiving end so that people tuning in will actually see the live video in 3D, even without wearing 3D glasses. The result: a tableau that follows you as you move your head and spin around restlessly in your desk chair waiting for the meeting to end. That's mighty impressive, but we can't help but wonder: do you really want to see your colleagues in such lifelike detail? Have a gander at the video and decide for yourself.
As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg
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