speed of light
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MIT's $500 Kinect-like camera works in snow, rain, gloom of night
Remember that camera that takes 1 trillion exposures per second? Well, the illustrious folks at MIT have outdone themselves (again) by developing a camera that accomplishes all that and more, for just $500. Similar to the recently released Xbox One Kinect, this three-dimensional "nano-camera" is based on "Time Flight Technology." That means an object's whereabouts are calculated by measuring the time it takes light to reflect off its surface and return to the sensor. But, thanks to some fancy math, the nano-cam can capture translucent and moving objects in 3D, using a new encoding method. In the past, the results of the process (which has been dubbed "nanophotography") could only be achieved with a $500,000 "femto-camera." With such a dramatically lower price tag, it could be a solution to one of the many hurdles facing self-driving vehicles: the ability to tell the difference between a puddle and a cat in the pouring rain. And, even though it functions like a Kinect, don't expect it to be standard issue with an Xbox Two (or One II, or whatever Microsoft decides to call it).
Researchers create hollow fiber optic cable, almost reach the speed of light
Fiber optic cables are usually made of glass or plastic but those materials actually slow down the transmission of light ever so slightly. Researchers at the University of Southampton in the UK have created a hollow fiber optic cable filled with air that's 1000 times faster than current cables. Since light propagates in air at 99.7 percent of the speed of light in a vacuum, this new hollow fiber optic cable is able to reach data speeds of 10 terabytes (!) per second. Now that's fast. While the idea isn't new, it's previously been hampered by signal degradation when light travels around corners. This new hollow fiber optic cable reduces data loss to a manageable 3.5dB/km, making it suitable for use in supercomputer and data center applications. Isn't science wonderful? [Image credit: qwrrty, Flickr]
The Theory uses tiny MicroVision projector to concoct even tinier police chase (video)
Looking like the ghost of Hot Wheels fantasies past, a new video short has beamed out of the minds at The Theory -- a production team that just happens to have a MicroVision pico projector. Called "Speed of Light", the mixed media film was made by projecting shots onto walls, floors and objects like laptops and then filming it with "no CGI trickery" added later, according to the team. Featuring a miniature Ford GT chased by a police car, helicopters, missiles and explosions, the pursuit was filmed with a Canon 5D MkII and HD MiniCam. To see if the little crook gets away with it, peel out to the video after the break.
Remember those faster-than-light neutrinos? Great, now forget 'em
A week ago the world went wild over CERN's tentative claim that it could make neutrinos travel faster than light. Suddenly, intergalactic tourism and day trips to the real Jurassic Park were back on the menu, despite everything Einstein said. Now, however, a team of scientists at the University of Groningen in the Netherlands reckons it's come up with a more plausible (and disappointing) explanation of what happened: the GPS satellites used to measure the departure and arrival times of the racing neutrinos were themselves subject to Einsteinian effects, because they were in motion relative to the experiment. This relative motion wasn't properly taken into account, but it would have decreased the neutrinos' apparent journey time. The Dutch scientists calculated the error and came up with the 64 nanoseconds. Sound familiar? That's because it's almost exactly the margin by which CERN's neutrinos were supposed to have beaten light. So, it's Monday morning, Alpha Centauri and medieval jousting tournaments remain as out of reach as ever, and we just thought we'd let you know.
Scientists prove cosmological speed limit, time travel moves a little further out of reach
The cosmological speed limit remains unbroken. A team of researchers from the Hong Kong University of Science and Technology, led by Du Shengwang, claim to have proven that a single photon is incapable of traveling faster than light. The support for Einstein's special theory of relativity all but rules out the simplest form of time travel -- breaking the universe's traffic laws to condense time within a vessel. Don't get freaked out though, this doesn't mean time travel is impossible, only that it will be much more difficult than firing up a warp drive. General relativity still holds hope for bending and ripping the space-time continuum to meet our eon-hopping desires. Looks like it's time to get working on our flux capacitor technology.
The Light and How to Swing It: Patch 4.2's effect on holy PVP
Every week, WoW Insider brings you The Light and How to Swing It for holy, protection and retribution paladins. Every Sunday, Chase Christian invites you to discuss the finer side of the paladin class: the holy specialization. Feel free to email me with any questions you want answered, like why paladins are so awesome. I have a feeling that the developers have a hard time balancing healers for PVP combat. How should healers be killed in PVP? Should we run out of mana eventually, or is a bursty switch the only answer? Can the focused efforts of a single DPSer be enough to topple us, or should it take two players to finish us off? Trying to balance all of these elements for four different classes with five different healing trees is a challenge by any measure. Every organized PVP encounter revolves around the healers involved, especially in the golden bracket of 3v3. Prior to patch 4.2, teams loved seeing a holy paladin across the arena from them, as holy paladins weren't exactly amazing at 3v3 matches in the first few months of Cataclysm. We have a few key weaknesses, notably our lack of any long-term crowd control like Hex and our lone school of magic, holy, which leaves us defenseless when interrupted. We weren't completely ineffective in arenas before patch 4.2, but we also weren't breaking any records or winning any #1 Healer trophies.
The Light and How to Swing It: Patch 4.2 looms heavy for holy
Every week, WoW Insider brings you The Light and How to Swing It for holy, protection and retribution paladins. Every Sunday, Chase Christian invites you to discuss the finer side of the paladin class: the holy specialization. Feel free to email me with any questions you want answered, and catch me weekly on the Matticast! Patch 4.2 is hot on the heels of patch 4.1 -- it's already on the PTR. We can look forward to the upcoming Firelands quest hub and raid coming out soon. As with any patch, there are plenty of class changes and balance adjustments. If there's one thing that I've learned over the years, it's that no news is good news when it comes to holy paladins and patch notes. Unfortunately, there is news. Rebuke, Divine Protection, and Divine Shield all scored new icons in the patch, which you can check out in this article's title image. Divine Protection also received a new spell effect, which is also featured above (I call it the Divine Beach Ball). Our Speed of Light talent was also modified to reduce Holy Radiance's cooldown by an extra 10 seconds (giving it an effective cooldown of 20 seconds), and the speed boost was tied to Divine Protection. Neither of these changes is actually live on the PTR, so you'll have to hold your breath for now. Also, holy paladins are slated to receive the biggest nerf any spec in this expansion.
German scientists claim to have broken speed of light
We're almost terrified to hear what the physicists in the crowd have to say about this one, but a duo of German scientists have reportedly broken the speed of light. To do so, the two "set up an experiment in which microwave photons, energetic packets of light, appeared to travel instantaneously between two prisms forming the halves of a cube placed a meter apart." According to them, they were able to force light to overcome its own speed limit by utilizing a "strange phenomenon known as quantum tunneling." Dr. Gunter Nimtz was even quoted as saying that for the time being, it was the "only violation of special relativity that he knew of," and while it does indeed sound (way) too good to be true, we'll step aside and let the experts battle it out.[Via Telegraph, thanks Ian]UPDATE: As predicted, there's a high probability that these claims aren't exactly, shall we say, infallibly correct -- but at least someone's giving it a go, eh?
Researchers slow light to a "crawl," photonic computers imminent
While other divisions of NTT are trying to rev up data transmission rates as high as possible, others are trying to slow down the speed of light. This might seem like a Sisyphean task, but those Japanese scientists have done it -- researchers from the telco giant have just published a paper in the January edition of Nature Photonics showing that by using synthetic "photonic crystals," light can be slowed to 5.8 kilometers per second (it normally goes at about 300,000 kilometers per second). We ought to point out, though, that this isn't the first time that light has been slowed down so much, with a team at Harvard achieving the task last year by using ultra-cold Bose-Einstein condensates, and another study at Harvard showed in 2003 that light could be slowed all the way to 38 mph. Still, all of this research is another step forward in "photonic computing," which aims to use trapped light to usurp more traditional electron storage in traditional computer logic. We're sure that once this technology gets transferred to consumer-grade laptops (like, say in 2020), we'll be able to render 12-dimensional shapes in no time at all. [Image courtesy The Economist]Read - The RegisterRead - TechworldRead - New Scientist
