Language Selection

English French German Italian Portuguese Spanish

Useful cloaking device is one step closer to reality

Filed under
Sci/Tech

Last October saw a major breakthrough in an area of research that, until very recently, was squarely in the realm of science fiction—cloaking technology.

An article published in Science by a team of researchers at Duke University discussed how they had created a device that was able to cloak simple objects from microwave radiation.

While this was a stunning announcement, it wasn't what many Trekkies would think of off the top of their head. The Duke team used metamaterials—synthetic materials whose physical structure interacts with electromagnetic (EM) waves in ways that natural materials do not—to essentially guide microwave radiation at a given frequency around a cavity that held the object. If one looked at it, they would still clearly see the entire setup as microwaves have a much longer wavelength than visible light. Another shortcoming was that while the cloak kept the material invisible from outside viewing, it did nothing to keep EM radiation originating from inside the cavity from getting out. This means that anything emitting EM radiation—heat from a person's body, RF signals from a cell phone/radio, or even a simple flashlight—would be instantly detectable. Now, some new mathematics suggests a way one can get around this issue.

Full Story.

More in Tux Machines

Ubuntu Touch OTA-14 Officially Released with Revamped Unity 8 Interface, Fixes

A few moments ago, we've been informed by Canonical's Lukasz Zemczak about the general availability of the long-anticipated Ubuntu Touch OTA-14 software update for Ubuntu Phone and Ubuntu Tablet devices. Read more Also: Ubuntu OTA-14 Released, Fixes A Number Of Bugs

Cloud convenience is killing the open source database

Open source has never been more important or, ironically, irrelevant. As developers increasingly embrace the cloud to shorten time to market, they're speeding past open source, making it even harder to build an open source business. After all, if open source were largely a way for developers to skirt legal and purchasing departments to get the software they needed when they needed it, the cloud ups that convenience to the nth degree. In Accel's annual business review, the vaunted venture capital firm writes: "'Product' is no longer just the bits of software, it's also how the software is sold, supported, and made successful." The cloud is changing the way all software is consumed, including open source. Read more

Why the operating system matters even more in 2017

Operating systems don't quite date back to the beginning of computing, but they go back far enough. Mainframe customers wrote the first ones in the late 1950s, with operating systems that we'd more clearly recognize as such today—including OS/360 from IBM and Unix from Bell Labs—following over the next couple of decades. Read more

OpenGov Partnership members mull open source policy

The Open Government Partnership (OGP) will suggest to its member governments to create a policy on open source. This week, a draft proposal is to be finalised at the OGP Global Summit in Paris. Read more