Bridgelux silicon LED could mean bright future for solid state lighting

While Democrats and Republicans squabble over the future of the incandescent light bulb, a Livermore-based company has produced an LED that they claim could lead to brighter, more affordable solid state lighting. By growing gallium nitride on low-cost silicon wafers, as opposed to the typical sapphire and silicon carbide substrates, the company has achieved an output of 135lm/W (lumens per watt) with a color correlated temperature of 4730K– brighter than any affordable LED lighting solution we’ve ever seen. Of course, this isn’t the first time efficacy of this level has been achieved, and we’ve yet to see a practical application, but if Bridgelux’s numbers are right, this could mean a 75 percent cut in LED production costs. The company expects the technology to make its way to real world lights in the next two to three years — perhaps by then the furor over pigtail light bulbs will have settled a bit. Enlightening PR after the break.

Continue reading Bridgelux silicon LED could mean bright future for solid state lighting

Bridgelux silicon LED could mean bright future for solid state lighting originally appeared on Engadget on Fri, 11 Mar 2011 00:44:00 EDT. Please see our terms for use of feeds.

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Networked ‘On Air’ light illuminates when webcast begins, dims when it ends (video)

We won’t get into the myriad ways to impress one’s audience while engaging in a live video podcast, but here’s one that slides into the ‘surefire’ category. The crafty folks over at MAKE decided to construct an automated On Air light for their new live sessions, and rather than automating it with a human hand flipping a switch at a predetermined time, they decided to wire it up to receive signals from a UStream API. In essence, the light is programmed to turn on when the podcast shows ‘online,’ and turn off when that status changes to ‘offline.’ It’s a beautifully simple concept, and yet, so illuminating. See for yourself after the break.

Continue reading Networked ‘On Air’ light illuminates when webcast begins, dims when it ends (video)

Networked ‘On Air’ light illuminates when webcast begins, dims when it ends (video) originally appeared on Engadget on Tue, 08 Mar 2011 13:48:00 EDT. Please see our terms for use of feeds.

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Optical tweezers manipulate microscopic objects using an iPad, raw brainpower (video)

Okay, so maybe the whole brainpower thing is a distant second to the iPad itself, but still — being a rocket scientist probably doesn’t hurt when manipulating microscopic objects via a multitouch display. That’s the kind of setup that students and boffins alike have going at England’s University of Bristol, where iTweezers are being used to control a tiny rod about 300 nanometers wide, amongst other things. Essentially, the iPad is able to display what’s under a microscope via a wireless display transfer, and then, touch points are converted into laser movements that are used to handle objects that are far smaller than those visible particles clogging up your left ear right now. All told, a user can select up to 11 different objects, and in theory, the iPad could enable scientists to do this remotely. Hey, we’re all about new and improved ways to telework. Vid’s below, kiddos.

Continue reading Optical tweezers manipulate microscopic objects using an iPad, raw brainpower (video)

Optical tweezers manipulate microscopic objects using an iPad, raw brainpower (video) originally appeared on Engadget on Tue, 08 Mar 2011 06:28:00 EDT. Please see our terms for use of feeds.

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What’s Inside a Lightbulb? Twenty Inches of Tungsten Coil

You probably know that an incandescent light bulb uses a tungsten filament.

What’s even cooler is that it’s got 20 inches of double-coiled filament — and tungsten is a brittle mineral that, under normal circumstances, can’t bend at all.

How do they hammer out a brittle metal to a super thin ribbon and then coil it up not just once, but then coil up the first coil?

The answer is in this approachable video (below) by University of Illinois engineering professor Bill Hammack, aka “The Engineer Guy,” who not only dismantles a light bulb but also presents animations and other illustrations to show how this thing is manufactured.

This is the first in the third series of videos produced by Hammack, who earlier tackled such fascinating subjects as how an old-school, pre-digital flight recorder works.

“We specifically aimed the last series and this series toward the Wired/Slashdot/Make magazine community,” Hammack told me in an e-mail. “While we want it approachable to people who don’t have too much scientific background, we always try to put something in there that will surprise the person with more knowledge.”

Mission accomplished!


Scientists figure out how to see through walls, sort of

We all know that light can’t exactly pass through solid objects — unless of course, you’re using a laser or something. Yes, X-rays allow us to look into suitcases at the airport and broken bones in our bodies, but there’s a new kid on the block that claims to have done the impossible in a novel fashion. Jochen Aulbach and his colleagues of the FOM Institute for Atomic and Molecular Physics out in Amsterdam have developed a technology that allows scrambled light to remain focused as it passes through ultra-thin layers of paint. You see, when light is sent through opaque material, it becomes muddled and lost in the space-time continuum. Aulbach and his crew used a spatial light modulator, or SMT, to control a 64-femtosecond long laser pulse that’s passed through a thin layer of paint. The SMT emits pulses that last long enough for only a machine to see and the data is sent to a computer for calibration. NewScientist claims that with this technology, it might be possible to hone in on cancerous cells and blast them to oblivion without damaging the healthy tissue surrounding them.

Scientists figure out how to see through walls, sort of originally appeared on Engadget on Tue, 01 Mar 2011 07:32:00 EDT. Please see our terms for use of feeds.

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UM students make cheap and portable solar charger / light source for developing nations

Solar power is the most egalitarian of all energy sources, yet residents in many parts of the world still lack access to electricity. Three University of Michigan engineering students have created an affordable solution to this problem — to the delight of camping geeks everywhere — with the Emerald, a portable solar panel that does double duty as both a cellphone charger and personal light source. We’ve seen the personal solar panel idea before, but the price of entry made it an untenable solution for developing nations. Solar-powered light bulbs have been around for a while too, but the Emerald’s light lasts for eight hours on a charge (as opposed to the bulbs’ two to six hours), and it’s able to fully charge a phone in the same time it takes an outlet to do the job. They aim to sell the device for the low, low, price of under twenty bucks for customers in the developing world, which is 90 percent cheaper than other solutions and 100 percent more awesome.

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UM students make cheap and portable solar charger / light source for developing nations originally appeared on Engadget on Mon, 31 Jan 2011 18:35:00 EDT. Please see our terms for use of feeds.

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Harvard University controls worm with laser, we wait for choreographed dance moves (video)

Researchers at Harvard University’s Center For Brain Science have successful manipulated nematode C. elegans worms by genetically modifying a select few of their 302 neurons. Not to be confused with magnetically controlled invertebrate, these creepy-crawlies are controlled by the CoLBeRT system (a nod to the comedian but no other relation), controlling locomotion and behavior in real time. The scientists can manipulate movement of the worms, induce paralysis, and even cause them to lay eggs all by shining a laser that turns on and off the modified cells at will. The laser hits the worm and causes it to react as if it were being touched. According to the researchers, the reaction is similar to when light is shined in a human eye — the protein found in the worm and eyes are sensitive to different variations of rays and will respond based on the color shined. Peep past the break for some squiggly mind- er, light-controlled action.

Continue reading Harvard University controls worm with laser, we wait for choreographed dance moves (video)

Harvard University controls worm with laser, we wait for choreographed dance moves (video) originally appeared on Engadget on Tue, 18 Jan 2011 09:47:00 EDT. Please see our terms for use of feeds.

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Yantouch Black Diamond 3D ambience iPhone dock hands-on

While we weren’t busy kicking up dust on the CES floors, we sat down with Taiwan-based Yantouch to have a fiddle with its latest product, the Black Diamond. When not in use, it really is just a gorgeous spherical black diamond, or at least its faceted front half is; but slip in an iPhone 4 with the Black Diamond app enabled, and you get a funky sound sensitive mood lamp. On top of that, the dock also charges up your iPhone while it shows off its colors, and somewhere at the bottom there’s some black magic that channels out amplified audio from the phone, although actual speakers would be even nicer.

Ultimately, Yantouch sees the Black Diamond as a developing platform for potential applications like an outdoor temperature indicator, or some sort of caller ID color tagging tool for seeing from afar who’s calling. If all goes well, Yantouch will even consider making an Android version, but we’re not sure if the $79 price tag will immediately catch on. Anyhow, check out our hands-on video after the break.

Continue reading Yantouch Black Diamond 3D ambience iPhone dock hands-on

Yantouch Black Diamond 3D ambience iPhone dock hands-on originally appeared on Engadget on Tue, 11 Jan 2011 20:08:00 EDT. Please see our terms for use of feeds.

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Christmas lights hack puts your IM contacts on the wall above your desk (video)

As you well know, if it exists it can be hacked. And what better way to ring in the holidays than by taking a string of GE Color Effects G-35 lights and — thanks to some hand-crafted drivers and a Microsoft .NET Micro Framework embedded controller — turning it into a IM notifier? Of course, these aren’t any old Christmas lights: between the ability to change colors and the preset light shows, these guys boast a feature set that Clark Griswold would die for. And that’s where a Microsoft employee named Andrej Kyselica comes in: using the Microsoft Lync 2010 Office Communications Server, our man has rigged a system that allows him to assign each of his instant messenger contacts to a particular bulb, which changes color according to each contact’s status (for instance, green indicates that someone’s available, white means away, and purple means out of the office). Pretty sweet, eh? Check out the video after the break for a closer look.

Continue reading Christmas lights hack puts your IM contacts on the wall above your desk (video)

Christmas lights hack puts your IM contacts on the wall above your desk (video) originally appeared on Engadget on Thu, 16 Dec 2010 09:24:00 EDT. Please see our terms for use of feeds.

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Troika’s mechanical LED sculpture lights up Art Basel (video)

Art Basel down in Miami has been the go-to place to see the best and brightest in design this past week, with Troika’s ‘Falling Light’ installation falling squarely into the latter category. This mechanical LED sculpture needed a room to itself, as it hosts 50 ceiling-suspended devices with each incorporating a custom cut Swarovski crystal optical lens, a computer programmed motor and a white LED. As you can see in the video down below, the white metal armatures rise in syncopation by rotating cam before gravity releases them earthward, which then activates the LED to move closer to the crystal lens. Through the magic of diffraction, you end up with a rainbow effect being flung to the floor, creating a perfect environment for… let’s say, a rave. Or, you know, your next bedroom.

Continue reading Troika’s mechanical LED sculpture lights up Art Basel (video)

Troika’s mechanical LED sculpture lights up Art Basel (video) originally appeared on Engadget on Sun, 05 Dec 2010 08:36:00 EDT. Please see our terms for use of feeds.

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