Researchers from Korea claim to have produced the world's first purely white LED (light-emitting diode).
Soo-Young Park, a professor of organic materials for photonics at the Department of Materials Science and Engineering at Seoul National University in Korea, led the group, which includes researchers from the University of Valencia in Spain.
Because LEDs do not naturally produce white light, getting them to look like they do adds to their production cost, making them … Read more
Last year, 5.11 Tactical, which makes clothes and gear aimed at law enforcement officers (but sells to civilians), announced a new high-tech flashlight called Light for Life. Only recently, however, has it become available to order.
What's special about it? Well, the flashlight uses three LEDs, but its key component is Flashpoint Power technology, an ultracapacitor energy storage system from Ivus Energy Innovations.
Light for Life recharges in just 90 seconds and shines at 90 lumens for 90 minutes per charge. The flashlight has three modes: bright (270 peak lumens), standard (90 lumens), and strobe, which is good for dance parties or scaring the neighbors' dog and kids (OK, I'm kidding, but you get the picture).
According to 5.11 Tactical, the 50,000-hour LEDs never have to be replaced and the flashlight is engineered to "offer 10 years of maintenance-free service under typical conditions." (You can recharge it up 50,000 times or one time a day for 135 years.)
I got a chance to play around with the thing at a recent event, and I have to say I was pretty impressed. It's lighter (16 ounces) than it looks, and it feels very durable. The one question I asked was: what happens when the power goes out and you have to recharge the thing? Answer: it comes with a 12V DC automotive charger, so you can use your car to charge it up in the event of a power outage.
The only drawback: Light for Life costs a whopping $169.99. But 5.11 Tactical says that when you add up the cost of all those D batteries over the lifetime of a battery-powered police flashlight, it's still a deal. And then there's all that good karma you get for not chucking those batteries into the garbage or landfill. It's hard to put a price on that.
See one more photo after the break.… Read more
According to information from a lineup sheet first posted on engadgetHD, and confirmed by a Vizio spokesman, the company's highly anticipated VF551XVT, previously scheduled for release this month, will be delayed until September.
The 55-inch HDTV is also going to be $200 more expensive. That new price is likely to provide differentiation between the VF551XVT (now $2,199, up from $1,999) and the current VF550XVT (still $1,999), which we reviewed earlier this year and will remain in the company's lineup.
When it finally arrives, we expect the VF551XVT to handily outperform its less-expensive 55-inch brother. That'… Read more
Whether you're BBQ'ing, lazing by the pool, or showing those (un)fortunate souls all of your summer vacation photos, this episode has a little something for everyone.
Subscribe with iTunes (audio) Subscribe with iTunes (video) Subscribe with RSS (audio) Subscribe with RSS (video) EPISODE 139 TomTom GO 740 Live is our GPS Editors’ Choice
For times where :-) just doesn't quite convey the message.
Buzz on the Web is that Nokia has filed a patent for light messaging. Unless you text that you're mad or happy, chances are that you'd have to append a :-) or :- ( to set the tone of the message at some point. This helps the receiving party know how you were feeling when you sent the text.
Just think of these subtle SMS emoticons in the form of colored lighting and you'll have an idea of what the Finns are up to. It works like … Read more
High-tech bus stops so cool they might actually entice you to take a ride will be installed next year in Florence, Italy.
The urban fixtures have been designed by a group of researchers led by Carlo Ratti, head of the Senseable City Lab at the Massachusetts Institute of Technology.
The EyeStop is a touch-screen bus shelter that monitors environmental conditions and real-time bus movement and also provides information and communication tools that can interact with your cell phone.
We've already checked out one Samsung LED-based LCD TV this year, the UNB7000 series, but that's not gonna stop us from reviewing the less expensive version, logically called the UNB6000 series. The verdict? Still expensive, stylish and solid performing, minus a few issues like a fluctuating backlight and less than stellar uniformity.
In fact, aside from Yahoo Widgets, available on the 7000 but not on the 6000, the two edge-lit LED-based LCD displays (whew!) are basically the same. The 7000 uses a skosh more power and gets the tiniest bit blacker, while the 6000 gives ever-so-slightly better shadow … Read more
Looking to blur the line between business and consumer laptops, HP's new ProBook line of systems looks to, in the company's words, "merge business functionality with sophisticated design."
These 14, 15, and 17-inch 16:9 models come in red or black ("merlot" or "glossy noir") and include thin LED backlit displays, and a spacious raised keyboard design that's a departure from HP's norm.
Interestingly, Linux will be an option, in addition to Windows Vista. It's not the first time we've seen Linux from HP, but it's the … Read more
Update 7-30-2009: Samsung has announced that the model numbers of these TVs will be UN46B8500 and UN55B8500 respectively, not B9000 as described below. For more information refer to the blog of the announcement.
Prior to CES, Samsung's reps mentioned in a conversation with CNET that a successor to the company's best 2008 HDTV, the LNA950 series, would be available later in 2009, and now details are beginning to emerge.