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Comment Re:Factor 30 (Score 1) 113

According to TFA, they can currently make the structures as small as 200 nm, meaning that there is "only" a factor 20 difference. To make things worse, creating this "cloak" to hide a 1 micrometer object took 3 hours, so creating a cloak for Mr. Potter will probably take years, if not decades.

Comment Correlation/causation (Score 3, Informative) 378

These numbers don't mean too much, because at the time the ballot screen was introduced Opera introduced a new version of their browser as well. Probably at least part of the increase is caused by this new version, and not by the ballot screen.

However, still nice to see people trying something different.

Comment Re:Not for action games then? (Score 1) 71

Not for action games then?

Honest question - what kind of games are motion controls good for besides "action games"?

Bowling, fitness, golf, various other sports games? Seriously, take a look at the Wii lineup and you'll see plenty of games that could be considered action games in the widest sense but usually aren't.

Comment Re:Stupid question... (Score 1) 6

Computing very large numbers is done with the use of Fast Fourier Transform (FFT).

Small correction: multiplying very large numbers is done with the use of the FFT, addition/subtraction not. That's because multiplication is very similar to convolution (try to multiply to numbers on paper and you'll see its pretty much the same as convolution of the numbers represented as arrays of digits), and convolution in the time domain is equal to pointwise multiplication in the frequency domain. For numbers with more than a certain amount of digits going through the FFT is actually faster. Furthermore I suppose you're referring to the Gauss-Legendre (http://en.wikipedia.org/wiki/Gaussâ"Legendre_algorithm) algorithm. Its difficulty is not in multiplication, because that can be done relatively fast using the FFT, but in the fact that there's a square root in it. If you approximate the square root wrong, this error will propagate through your iterations, so you must be very careful about that. Anyway, cool stuff!

Security

Submission + - Opera is hackers favorite browser (well almost) (forbes.com)

Leevi writes: The best defense on the Web could be Opera. And hackers themselves are Opera lovers. Paul Royal, a security researcher at Atlanta-based Purewire discovered. He found that while 33% used Firefox, 26% used Opera. Generally, Opera has only 1-3% user share.* "Criminals themselves are using less targeted browsers, perhaps because they understand their product and about what it does," Royal says. * http://en.wikipedia.org/wiki/Usage_share_of_web_browsers#Summary_Table
Space

Submission + - Relativistic Navigation Needed for Solar Sails (technologyreview.com)

KentuckyFC writes: "Last year, physicists calculated that a solar sail about a kilometre across with a mass of 300 kg (including 150 kg of payload) would have a peak acceleration of about 0.6g if released about 0.1AU from the Sun, where the radiation pressure is highest. That kind of acceleration could take it to the heliopause, the boundary between the Solar System and interstellar space, in only 2.5 years; a distance of 200 AU. In 30 years, it could travel 2500AU, far enough to explore the Oort Cloud. But the team has discovered a problem. Ordinary Newtonian physics just doesn't cut it for the kind of navigational calculations needed for this journey. Because the sail has to be released so close to the Sun, it becomes subject to the effects of general relativity. And although the errors these introduce are small, they become magnified over the course of a long journey, sending the sail roughly 1 million kilometres off course by the time it reaches the Oort Cloud. What these guys are saying is that if ever such a sail is launched (and the earliest estimate is 2040), the navigators will have to be proficient in a new discipline of relativistic navigation."

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