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Comment Re:Edison reaching out from beyond the grave (Score 3) 462

As an aside, car manufacturers are also moving towards higher voltage because that gives them easier access to drive high-power systems like power steering. Currently most power steering is pneumatically driven, which comes with a hefty overhead cost in terms of manufacturing and maintenance. With a high-voltage bus to drive it, the complex machinery simplifies it to an electric motor and some gears.

Comment RFID? (Score 2) 170

Why not put an RFID tracker on each car? They're relatively cheap and you can store some encrypted identifier in it. Pillar or mat sensors would pick up when the car crosses the line, though it might be a challenge finding sensors that'd pick up a car at 60mph...

Comment Re:"we should not be afraid to die" (Score 1) 227

Absolutely. *GETTING* to orbit, from a mass and technology point of view, isn't a huge hurdle any more. It's getting there affordably. Elon stated a $50M Falcon has $200,000 worth of fuel, or 0.4% of the launch price. All the rest is split between building/refurbishing the rocket in the first place, launch prep (largely labor driven), fixed overheads (buildings) and profit. If you soft-land, theoretically you're "building" once, and doing a lot less "refurbishing" because there was no jolt from a parachute landing, or corrosive salt-water to clean up. SpaceX is hammering launch prep costs already by being able to setup and launch a rocket in days not weeks/months. By reducing these costs, you're able to sell cheaper and launch more frequently, which drives the overhead allocation to any one lauch down as well.

In summary, while you may get a lower mass fraction to orbit by having soft-landing lower stage, the amount of money/equipment lost per launch is less, making the whole setup cheaper. Drop some extra coin on fuel to get more into orbit, it's still cheaper than a smaller, higher mass-fraction throw-away rocket.

Comment Re:Insider trading (Score 1) 144

Well, technically executives have to public announce trading activity to the SEC of any stock they have privileged (insider) information about. That's why you'll see trading activity listed on things like a 10-K filing. It's a huge frigging clue if an executive shorts his stock a couple of weeks before a quarterly or annual report. It's much more common for them to cash in options or stock around the holidays or summer vacation.

Comment Re:Hmmm (Score 1) 937

Using uranium as a guide, the spot price of uranium is $85 / lb, or about $0.19 / gram. Thorium is more abundant than uranium, geologically diversified (less transport costs), and doesn't need to be radioactively treated (a la U-233) in order to be usable. It does, however, need chemically separated using sulfuric acid in a non-trival process. Even if the treatment and packaging were 100x-1000x the raw material cost, you're still way ahead of heat & pressure treated dead dinosaur guts.

Comment Re:Don't get too excited (Score 1) 80

I'll second this. I actually took classes from Dr. Davidson (lead researcher) over a decade ago, and he was shooting for the same goal back then. The approach seems to have changed - using CVD now instead of cut, polished, and etched diamond crystal (just like silicone) - but it doesn't sound like they're any closer to having solved some of the more practical or marketable problems outlined above.

Facebook

Facebook To Make Facebook Credits Mandatory For Games 116

An anonymous reader sends this excerpt from TechCrunch: "Facebook has confirmed that it is indeed making Facebook Credits mandatory for Games, with the rule going into effect on July 1 2011. Facebook says that Credits will be the exclusive way for users to get their 'real money' into a game, but developers are still allowed to keep their own in-game currencies (FarmBucks, FishPoints, whatever). For example, Zynga can charge you 90 Facebook Credits for 75 CityCash in CityVille. ... The company acknowledges that some developers may not be pleased with the news, explaining this is why it is announcing the news five months in advance, so it can 'have an open conversation with developers.' The rule only applies to Canvas games (games that use Facebook Connect aren't affected), and while it's games only at this part, Facebook says that it eventually would like to see all apps using Facebook Credits. It's a move that's been a long time coming — there has been speculation that Facebook would do this for a year now, spurring plenty of angst in the developer community."
Image

Rupert Murdoch Claims To Own the 'Sky' In 'Skype' 186

Crudely_Indecent writes "Not content to own just news stories, Rupert Murdoch is now going after individual words! His BSkyB is fighting a legal battle with Skype, claiming that it owns the 'Sky' in 'Skype.' From the article: 'A spokesman for Sky confirmed that the company has been involved in a "five-year dispute with Skype" over trademark applications filed by the telecomms company. These are, the spokesman added: "including, but not limited to, television-related goods and services."'"
Education

3rd-Grader Busted For Jolly Rancher Possession 804

theodp writes "A third-grader in a small Texas school district received a week's detention for merely possessing a Jolly Rancher. Leighann Adair, 10, was eating lunch Monday when a teacher confiscated the candy. Her parents said she was in tears when she arrived home later that afternoon and handed them the detention notice. But school officials are defending the sentence, saying the school was abiding by a state guideline that banned 'minimal nutrition' foods. 'Whether or not I agree with the guidelines, we have to follow the rules,' said school superintendent Jack Ellis."

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