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Rick Cavallaro and John Borton have built a cart that moves 2.86 times the speed of the wind, moving straight downwind. That may seem impossible, but after a year of tinkering and some financial assistance from Google and Joby Energy, they did it. Don't believe me? Check out the video. Keep a weather eye out for the green flag at 0:35. Notice how it's blowing the exact opposite direction of the orange wind socks on the cart? That's because the cart is going faster than the wind.

The cart is quite aerodynamic, so it makes a crappy sail, but it's still a sail. The wind gives it a push, and the car starts to roll, however slowly. As it moves along the ground, the wheels turn. At 0 kph the cart has an air speed (relative to the 10 kph wind) of -10 kph. As it gets rolling, it will catch up to the wind in velocity: at 5 kph ground speed, it has a -5 kph relative air speed, and at 10 kph ground speed, it has a relative air speed of 0 kph. At 10 kph ground speed, the cart is just like the balloon, and would not beat the balloon in a race. But unlike the balloon, the cart has a 17-foot propeller linked by a complicated drive train to the wheels. And it's the wheels that provide the work to turn the propeller. Remember that: The wheels turn the prop. Not the wind. Not magic pixie dust. The wheels turn the propeller. That's important. At 0 kph air speed, the propeller, sections of which have already been pulling on the car, really begins to bite on the air. It pulls the car forward exactly as a propeller pulls an airplane forward. The ground speed of the car increases, turning the wheels faster, which turn the propeller even faster, adding yet more acceleration. And now the whole project seems ridiculous,because everyone knows a perpetual motion machine is impossible. But the wind never stops adding power to the system. Come back to the difference between the relative air speed and the ground speed. In the example, the cart reaches a ground speed of 10 kph, and relative air speed of 0 kph. The propeller kicks in and the cart accelerates: Ground speed rises to 20 kph, with relative air speed of 10 kph; then 30 kph ground speed with relative air speed of 20 kph, then it finally reaches a top speed of 28.6 kph, with a relative air speed of 18.6 kph (meaning, going 18.6 kph faster than the wind). There's some loss to friction and to the drive train, but generally the wheels are always doing 10 kph-worth more work then the propeller, because the

THE COPHENHAGEN WHEEL  Smart, responsive and elegant, the Copenhagen Wheel is a new emblemfor urban mobility. It transforms ordinary bicycles quickly into hybrid e-bikes that alsofunction as mobile sensing units. The Copenhagen Wheel allows you to capturethe energy dissipated while cycling and braking and save it for when you need a bit of a boost. It also maps pollution levels, traffic congestion,and road conditions in real-time.  The Copenhagen Wheel will be unveiled on December 15 at the COP15United Nations Climate Conference. 

Fantastic info about actual time of some inventions..! People inventing things way before they can be even used at mass scale...!

"Fifty years ago today, on December 29, 2009, Richard P. Feynman gave an after-dinner talk in Pasadena at an annual post-Christmas meeting of the American Physical Society. Here is how Ed Regis describes the setting of the lecture in his rollicking book Nano: In the banquet room [at the Huntington-Sheraton hotel in Pasadena], a giddy mood prevails. Feynman, although not yet the celebrity physicist he'd soon become, was already famous among his peers not only for having coinvented quantum electrodynamics, for which he'd later share the Nobel Prize, but also for his ribald wit, his clownishness, and his practical jokes. He was a regular good-time guy, and his announced topic for tonight was "There's Plenty of Room at the Bottom" - whatever that meant. "He had the world of young physicists absolutely terrorized because nobody knew what that title meant," said physicist Donald Glaser. "Feynman didn't tell anybody and refused to discuss it, but the young physicists looked at the title 'There's Plenty of Room at the Bottom' and they th"

All that time and energy saved! Why haven't we thought of it before?

The B-Class F-CELL combines a high, emission-free range of around 400 km with short refilling times and as such is highly suitable for both everyday use in urban areas as well as longer journeys. At the heart of the B-Class F-CELL is the new-generation electric drive system powered by a fuel cell, which is compact, powerful, safe and fully suited to everyday use. The fuel cell generates the electrical power on board from a chemical reaction between oxygen and hydrogen.

"These long, thin fibers, which are three times as thick as a human hair, can transmit more than a terabyte - the equivalent of 250 DVDs - of information per second.

The new luminous materials, or phosphors, could improve upon current organic light-emitting diodes (OLEDs) and solid-state lighting. Bright, low-power OLEDs are used in some small screens on cell phones or cameras. At this time, they aren't practical for use in larger displays because of material costs and manufacturing issues.

Currently the system uses only one photon at a time, but a two-photon system, while more complicated, would be more effective in using the full spectrum of sunlight.

#DigitalSoon What Makes A Computer Fast? Microchip That Works Like a Human Brain: Do you know What Makes A Computer Fast? Do you heard that a new Microchip "Neurogrid" could make your PC work 9000 times faster than the regular existing one, just like a Human Brain. In short Human Brain Microchip is 9000 times faster than PC. Read More: http://goo.gl/Q60ZPE

"#DigitalSoon SmartMio - Wearable Muscle Stimulator That Makes You Workout Smarter: SmartMio wearable muscle stimulator will improve muscle strength very rapid. To acquire best out fit in quick time gap then try SmartMio. Everyone wish to have good appearance and better out-fit structure. As we know that Health is Wealth! SmartMio is such as device designed to enhance performance within no time. Read More: http://goo.gl/fsNN6B "

If you've not updated WhatsApp in a long while, it might just be the time to do so. The messaging service has issued a fix for a major security flaw, which has been lurking around in the Android and iOS versions of WhatsApp, giving hackers an opportunity to take control of their targets' app.

Boston Dynamics' Atlas is back. And, this time it's not just strolling around or doing backflips, but also leaping over obstacles like a real commando. For the uninitiated, Atlas is a freakishly talented robot made by Boston Dynamics, a SoftBank-owned robot design company.

These questions are very important and lucrative if answered correctly. I am going to discuss today the top 5 strategic technology trends that will be on the hype for 2019. So without wasting any more time, let's get to the point.

In the wake of rising internet scams, Vodafone Idea has started issuing warning messages to alert its subscribers about potential frauds. According to a report in Times of India, the telco is sending out bulk messages, warning users to be wary of an ongoing 'lottery fraud'.

For quite some time now, Samsung has been seen a worrying slump in sales. Chinese OEMs remain a challenge in the budget segment whereas Apple and OnePlus dominate the premium range. But, to turn around things, Samsung has some major launches lined up for 2019, including new Rize series of phones.

New AI chips are being brought into the most recent cell phones, and they put the intensity of nonpartisan systems in the palm of your hand. With cool names like 'Bionic Chip' for iPhone and 'Unbiased Processing Unit' for Huawei's telephone, it accompanies an unavoidable issue that what do these AI chips really do? The extent of the term AI or Artificial Intelligence will in general move and advance after some time. In straightforward words, Artificial Intelligence is anything where the machine indicates human-style contemplations and thinking.

From working to booking holidays to passively browsing social media and playing games, we spend a lot of time on our smartphones. However, casual and careless use can often result in extremely poor battery life. Here, we list 5 ways which help you conserve battery on Android phones.

Mobile is the most powerful medium of our times and Apps are the way to tap your business potential! And if you are striving to raise your ROI and lower your bottom line with an impactful Mobile App, ...

Mobile apps today are among those select few drivers that can potentially influence and alter global trends as they save time and costs while driving productivity. Such is the spread of mobile computing on the world's stage, that its effect on the audience (users) is nearly instantaneous. The functionalities offered by mobile apps and the ease with which they have fused with our devices, as well as lives, have taken them from being mere add-ons to a formative thought associated with the technology that channels them.