practical – Tech Today w/ Ken May

YouTube boosts the quality of online VR video

When you stream VR video online, you usually have to sacrifice visual quality. There’s a lot more data, so something has to give. However, that isn’t stopping Google’s YouTube and Daydream groups from improving what you see. They’re introducing a new projection technique, the equi-angular cubemap (EAC), that promises to increase the practical level of detail for 360-degree footage. Where conventional methods produce pictures that are only sharp in certain areas, EAC is extremely consistent — it distributes an equal number of pixels across all angle changes. It may not be as theoretically sharp in certain areas, but there are no glaring weak points. Google wants to help others improve VR projections, too. To that end, it’s proposing a Projection Independent Mesh standard that would simply tell a video player how to project the raw VR info. The approach would use extremely small amounts of data (just 4KB for EAC), so it wouldn’t require gobs of bandwidth or new hardware. You can find a draft version of the standard on GitHub . At the moment, you’ll have to use an Android device to watch videos that use EAC. Desktop and iOS viewing is coming later, Google says. And unless it’s a specially optimized video, you probably won’t see it — YouTube still ingests clips based on a conventional projection format. This upgrade is more about the long-term future of VR rather than an immediate upgrade. Source: YouTube , Google

Scientists map every atom inside a nanoparticle

Even the smallest defects can create serious problems. It’s a good thing, then, that researchers have found a way to map nanoparticles at an “unprecedented” level of detail — they’ve located the 3D positions of all 23, 000 atoms in an iron-platinum particle. The group used an extremely high-resolution transmission electron microscope (TEAM I) to capture 2D projections of the nanoparticle’s structure, and used an algorithm to stitch those together into a 3D reconstruction. If there’s a missing or misplaced atom, you could easily spot it. The work could help spot consistent flaws in nanoparticle products, which could be vital in health care and other areas where you can’t afford a mistake. And even if it doesn’t, there are numerous other practical purposes. Scientists hope to create an internet database that illustrates atom-level material properties, and the 3D algorithm could be used for CT scans and other imaging tech. In short, this clearer look at the nano-scale world could have a tremendous effect on many fields — it may just be a matter of time. Source: Berkeley Lab , UCLA

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Scientists map every atom inside a nanoparticle

You can cut this display with scissors

Want a display that can take any shape ? You might not need a factory to cut it for you in the future — may only need a pair of scissors and a steady hand. Japan’s National Institute for Materials Science has developed a flexible, organic/metal hybrid polymer display that you can cut without wrecking it. The technology only needs a few seconds of power to adjust to its new shape, and it even maintains its last information when you switch it off, a lot like e-paper. The existing design only displays in one color and has a limited display area. It’s easy to see the practical purposes even now, though. You could make your own clothes with integrated displays, or craft smart wearables that fit the exact shape of your wrist. The researchers also envision a world where you could change the colors of car interiors, sunglasses and windows thanks to displays that fit just about anything. Any such breakthrough is undoubtedly years away, but the very fact that it’s a possibility is noteworthy. Via: Science News Journal Source: NIMS

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You can cut this display with scissors

Leather-Core Plywood!

The “living hinge” you see molded into clamshell packaging has always been the domain of plastic; metal and wood don’t like the repetitive stress of bending. But Bavarian fabrication firm Ackermann has worked out a way to do a living hinge in plywood. The trick is to laminate a sheet of synthetic leather into the center of the veneer stack. With miters precisely cut just shy of the leather layer, it yields a tough, hardware-free hinge. The leather can also be laminated to the outside of a material like MDF. Larger corner radii can be achieved by inserting a tube. As for what the practical applications are, Ackermann isn’t saying; the techniques were either developed as contract work for a client—”We provide services for craftsmen, trade fair and interior construction industries [ranging] from the simple milling of an individual component to the serial production of entire objects, ” they write—or out of pure experimentation. The company has some 120 employees and 14 apprentices, with traditional carpenters, designers, CNC operators and fabrication technicians all working side by side to master various materials. “I enjoy nothing more than the discovery of new techniques, ” says Manfred Weid, Manager of Technical Operations. “With permanent development we stay in proximity to the pulse of the times.”