Author: Dr. Blip (Page 24 of 134)

technologyreview.com – Carpet cloaks make practical cloaking at visible wavelengths possible for the first time.

It wasn’t long ago that some physicists said that optical invisibility cloaks would be impossible to build. This week, two teams are claiming to have built cloaks that work over a wide range of optical wavelengths and the extraordinary thing is that both designs are almost identical (see illustrations in main article).

Invisibility cloaks work by steering light around an object fooling an observer who sees nothing but the background view. But while this works well for microwaves, it is not a straightforward matter to shrink these cloaks to a size that works at optical wavelengths.
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Now Michal Lipson and pals at Cornell University and Xiang Zhang and buddies at UC Berkeley say they have both built cloaks that are essentially mirrors with a tiny bump in which an object can hide. The cloaking occurs because the mirrors look entirely flat. The bump is hidden by a pattern of tiny silicon nanopillars on the mirror surface that steers reflected light in a way that makes any bump look flat. So anything can be hidden beneath the bump without an observer realising it is there, like hiding a small object under a thick carpet.

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technologyreview.com – Touch-screen technology has become wildly popular, thanks to smart phones designed for nimble fingers. But most touch screens have a major drawback: you need to keep a close eye on the screen as you tap, to make sure that you hit the right virtual buttons. As touch screens become more popular in other contexts, such as in-car navigation and entertainment systems, this lack of sensory feedback could become a dangerous distraction.

Now researchers at Carnegie Mellon University have developed buttons that pop out from a touch-screen surface. The design retains the dynamic display capabilities of a normal touch screen but can also produce tactile buttons for certain functions.

Graduate student Chris Harrison and computer-science professor Scott Hudson have built a handful of proof-of-concept displays with the morphing buttons. The screens are covered in semitransparent latex, which sits on top of an acrylic plate with shaped holes and an air chamber connected to a pump. When the pump is off, the screen is flat; when it’s switched on, the latex forms concave or convex features around the cutouts, depending on negative or positive pressure.
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To illuminate the screens and give them multitouch capabilities, the researchers use projectors, infrared light, and cameras positioned below the surface. The projectors cast images onto the screens while the cameras sense infrared light scattered by fingers at the surface.

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Lifehack – It’s happened to everyone at one time or another. You’re going along, producing and feeling creative, and then, suddenly, you run out of ideas. You’re stuck. You search high and low for inspiration. You look back on your earlier work, searching through your past ideas, trying to locate your muse, looking for something to trigger a creative explosion. But it’s all for naught. You’re blocked.

Regardless of what business you’re in, there’s always a need for creativity. Maybe it’s in how you present your products and services to your potential clients, or maybe it’s the products and services themselves. Either way, you need help getting out of that creative rut.
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Gizmodo – A few months ago, I sat in a think tank with a group of distinguished digital camera experts. We were talking about the future of cameras, what was to come.

One name came up again and again. It was the Flip Video, the little camera that changed the industry. While tech giants like Sony, Canon and Nikon were duking it out in the typical, spec-warring dSLR space, a relatively small company named Pure Digital Technologies developed a real piece of crap camcorder called the Pure Digital Point and Shoot. The video quality was absolutely atrocious for 2006. The name was obviously equally as bad.

But as technology improves, we’re reaching the era of “good enough.”

The Pure Digital Point and Shoot (later renamed the Flip Video/Mino) was pocketable, cheap ($180) and served an important function: It was the perfect YouTube camera. And that, in itself, was enough.

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However, the Flip Video is not alone in under-performing game changers. You may remember way back to 2007 when a company we all kind of knew named Asus had something planned called the Eee PC.

Its screen was but 7-inches, and its storage was dwarfed by most iPods. But once again, the Eee was small, cheap ($245-$400) and served an important function: It was the near-perfect knock around computer. And that, in itself, was enough to drive the entire computer industry mad overnight.

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Gizmodo – The current Swine Flu pandemic headlines read like those flashing through the intro sequence of a post-apocalyptical movie. Now you can see the cases spreading in real time—as the WHO declares them—in Google Maps. Updated

In case you have not been paying attention to the news during the last few days, there’s a pandemia going on. A spike of infections of the H1N1 Swine Flu—a mutation of a pork virus that jumped from pigs to humans—happened in the city of Mexico (103 dead already) and it is quickly spreading through the world now, thanks to airline connections.

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