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Comment Re:Blimey (Score 4, Informative) 518

Bad example. Light does exert radiation pressure, yes - but it is far, far too weak to drive a radiometer. The spinning radiometer isn't due to radiation pressure. It's a more mundane effect: Imperfect vacuum. The black side is warmed more than the white, which heats up adjacent air, which exerts higher pressure, causing the spin. It's just a plain old heat engine.

Comment Re:Oh what the hell.. (Score 1) 184

That works. It just means that your software is sub-optimal - a competitor that pays the license fee can use more up-to-date techniques. It also requires constant legal vigilance - someone has to monitor any submitted code to make sure some programmer hasn't made use of a modern method without thought to the legal implications.

Comment Re:Oh what the hell.. (Score 1) 184

The codec only specifies how the encoded stream is formed and how it should be decoded. It does not specify how the encoder should transform raw video into encoded form, and much effort is devoted to finding new algorithms by which existing codecs may be made to perform better without alteration of the decoding side.

Comment Re:Intel's linux support is impeccable (Score 4, Interesting) 61

Graphics is a patent minefield - it's one of the most legally aggressive areas in computing. Both parties have a strong commercial incentive to keep their technology secret - both to stop their rival stealing ideas, and to avoid inadvertently revealing any code that infringes upon a patent they were not aware of at the time. This slows down open-source development as every change needs to be examined by legal experts, and most legal experts are very cautious in their advice.

Comment Re:So you have it.... Now what??? (Score 2) 120

The general rule I use is to divide mbps by ten to get MBps, rather than 8. The slight over-division compensates for various overheads - headers, dropped packets, etc.

It'd be better if we weren't stuck on such tiny MTUs still, but backwards compatibility demands it: Anything over 1500 bytes is probably going to run into an ethernet segment somewhere and go wrong.

Comment Re:I guess you can build a career... (Score 1) 169

It'd have to be quite an assassin too - the president is very well-protected. He can't leave home without a security team going ahead and securing every building with a window that overlooks his route, and he only travels any significant distance in vehicles designed to withstand a small missile. The JFK days of open-topped limos are past. I'm not sure quite how it could be done without access to some serious military hardware.

It'll be easier in a few years, when drones get smaller. You couldn't get a drone in close yet, but get them down to insect-sized and you can try fitting a ricin-tipped needle on one. It'd still be difficult even with that type of technology - you'd need to smuggle it through security at an event you knew he'd be attending, and try to stay unnoticed long enough to pilot it in from your smartphone... and I expect that once that tech becomes available, every area the president enters will also be screened off behind a mosquito net precisely to prevent such an attack.

Comment Re:Must be an impossible task. (Score 1) 169

I picked that site because they have a fairly rabid comment community, but not so fringe as to be completely isolated. WND is largely responsible for the Birther conspiracy theory - they started it, they worked tirelessly to promote it. Their stories are also frequently linked to from 'mainstream' right-wing news sites like OneNewsNow. They can't just be dismissed as some nutjob circle-jerk on a blog, they are still connected into the wider right-wing political community and can syndicate some columnists with real name recognition. They even have Chuck Norris writing for them.

ONN is a lot stricter with their comments though: If you threaten to shoot police officers there, moderators are likely to pull the comment after a short time. With WND it's pretty much anything-goes, so long as you don't actually say anything positive about Obama - those comments get moderated out quickly enough.

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"The fundamental principle of science, the definition almost, is this: the sole test of the validity of any idea is experiment." -- Richard P. Feynman

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