Windows/Mac/Linux: Khan Academy is pretty useful for learning about computer science , math, and many other subjects. If you’d rather learn without being tied to an internet connection, KA Lite allows you to manage and view downloaded Khan Academy videos. Read more…
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KA Lite Downloads Khan Academy Videos for Offline Lessons
By looking at the minute vibrations in high speed video, researchers at the Department of Engineering of the Catholic University of America have created a method for extracting sound data from high-speed silent video footage. From the release: The authors used a subset-based image-correlation approach to detect the motions of points on the surface of an object, capturing target images with… Read More
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New Technique Allows Researchers To Extract Audio From Silent Video
Jason Koebler writes A new imaging technique is able to capture images at 100 billion frames per second—fast enough to watch light interact with objects, which could eventually lead to new cloaking technologies. The camera was developed by a team at Washington University in St. Louis—for the team’s first tests, it was able to visualize laser pulse reflections, photons racing through air and through resin, and “faster-than-light propagation of non-information.” It can also be used in conjunction with telescopes and to image optical and quantum communications, according to lead researcher Liang Gao. Read more of this story at Slashdot.
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The Fastest Camera Ever Made Captures 100 Billion Frames Per Second
jones_supa writes In past builds of Windows 10 Technical Preview there has been an interesting feature called Battery Saver, but for the time being it has been just a mockup. In a leaked build 9888, the code is now in place. Battery Saver, as the name implies, will help your mobile device make the most out of your battery. This feature works by limiting the background activity on your device when the mode is activated. You can turn the feature on any time but there is also a setting to have it automatically turn on when the battery capacity goes below a user-defined percentage. Considering that this build was not supposed to make its way out of Redmond and that the company is not releasing any new builds this year, this may be the best look we get until the Consumer Preview arrives. Read more of this story at Slashdot.
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Windows 10 Adds Battery Saver Feature
The human eye is a more complex and mysterious thing than we thought. Recently, a group of scientists were puzzled by flashes of green light they saw from an infrared laser, whose light should have been far outside the visible spectrum. Like scientists do, they investigated. Human eyes do indeed perceive infrared light, they found, but not they same way they perceive ordinary colors. It’s weirder than that. Read more…
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Humans Have Been Able to Perceive Infrared Light This Whole Time
rossgneumann writes: The most abundant material on Earth didn’t have a name, and, in fact, hadn’t been seen — until now. For the first time ever, scientists have gotten their hands on a sample of bridgmanite, a mineral that is believed to make up more than a third of the volume of the Earth. In a new paper published in Science late last week, Oliver Tschauner of the University of Nevada, Las Vegas, and his team describe bridgmanite for the first time. Read more of this story at Slashdot.
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Scientists Have Finally Sampled the Most Abundant Material On Earth
If you’ve just had a really big meal, there’s a lot of things going on in your body . Between the stomach stretching and the chemical reactions taking place, here’s an explanation of what’s going on in there. Read more…
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This Video Explains What Happens to Your Body When You Eat Too Much
Midnight Thunder writes: The first trailer for Star Wars Episode VII: The Force Awakens has been released. (YouTube link.) This is the first real opportunity to get a feeling for whether childhood dreams will be crushed or Disney, with the help of JJ Abrams, will be able to breath new life into the story without making it feel like a merchandising excuse. Read more of this story at Slashdot.
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First Star War Episode 7 Trailer Released
According to The Verge , Microsoft is planning to unveil the consumer preview of Windows 10 at an event in late January. We’ll apparently see new consumer features, including a touch interface, and get more news on Microsoft’s phone and tablet lines. [ The Verge ] Read more…
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According to The Verge, Microsoft is planning to unveil the consumer preview of Windows 10 at an eve
An anonymous reader writes It’s the oldest rock on Earth–and it’s from Mars. A 4.4-billion-year-old martian meteorite, found in a dozen pieces in the western Sahara, has ignited a frenzy among collectors and scientists; prices have reached $10, 000 a gram, and museums and universities are vying for slivers of it. It is the only known martian meteorite made of sediment, a conglomerate of pebbles and other clumps of minerals from when the planet was warm, wet, and possibly habitable. The story of the discovery of the rock and its significance is fascinating, as well as the details presented about the economics of rare space materials. Apropos, this older story about missing moon rocks. Read more of this story at Slashdot.
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Conglomerate Rock From Mars: (Much) More Precious Than Gold