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User: Migraineman

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  1. Re: no free lunches on New Solar Cell Harvests Hydrogen From Water · · Score: 4, Informative
    Awright, before you start building the converter for the roof of your car, I'm going to put on my Homer Simpson hat and lecture that "in this house, we obey the laws of thermodynamics." And now for something completely different ... math!

    Let's take your average car. Not being picky, I'll surf over to Carmax and choose whatever pops-up first ... hmm, Honda Element. Not what I expected, but I'll run with it. Pertinent specs:
    - Engine: 2.4L 166-hp (~575kW) inline-4
    - Outside dimensions: 172" x 72" (4.4m x 1.8m)

    So you've got 7.92 sq.m. of available roof area. I'll assume you can cover that 100% with your solar converter, and I'll further assume you can keep it pointed normal to the incident light. Typical insolation is 1000W/m^2, so your roof-mounted collector can harvest 7.92kW. Period (i.e. you don't get more energy than what is incident on the vehicle's cross-section.) You're collecting solar energy, and storing it in the potential reactive energy between hydrogen and oxygen. With a 15% efficiency, your converter stores 1.188kW while it's illuminated.

    Getting back to our example Honda Element - 575kW engine ... damn. Okay, you're not running at peak power all the time. Let's be generous and say you need 10% of peak for grocery runs. That's 57.5kW. The ratio of consumed-to-collected energy is 57.5/1.188 = 48.4. So for every minute you drive your Honda Element at 10% of peak-rated power, it needs to be illuminated by sunlight for 48.4 minutes. If we make the generous assumption of 12 hours of 1kW/m^2 insolation, you'll be able to collect enough energy from sunlight to drive a whopping 14.076 minutes each day.

    S #1: What? A swallow carrying a coconut?
    A: It could grip it by the husk!
    S #1: It's not a question of where he grips it! It's a simple question of weight ratios! A five ounce bird could not carry a one pound coconut.

    And therein lies the fundamental limitation. There isn't enough energy intercepted in a vehicle's cross section to make this structure viable. At 100% conversion efficiency, you just start to be able to power the econobox-class vehicles for around-town drives. Anything with distance or power requirements will need to be fueled by something much larger than the vehicle itself.
  2. Re:vignette on Why Linux Doesn't Spread - the Curse of Being Free · · Score: 1

    Thank you. I was wondering if I was being too subtle.

  3. Re:vignette on Why Linux Doesn't Spread - the Curse of Being Free · · Score: 4, Funny

    In this vignette, Luke has been caught running Free Software.
    Luke is sitting alone at his computer. He nervously inserts a linux Live CD into the disk drive and reboots. His roommate, Chad, enters from the kitchen.

    Chad: Whatcha doin', Luke?
    Luke: [nervous] Nothing!
    Chad: Looks like you're installing linux.
    Luke: It's just a Live CD.
    Chad: You know, I've been into linux for years now.
    Luke: Really? I'm just ...
    Chad: Yes?
    Luke: God, I can't believe I'm saying this ... I'm ... I'm a little dual-boot curious.
    Chad: Oh. Let me show you how to properly set the boot parameters on that Live CD you've got
    [cue the "bow-chicka" music ...]
  4. Re:inkjets might on Secret Printer ID Codes May Be Illegal In the EU · · Score: 1

    Last week, my brother-in-law was having trouble printing with a brand-new Brother inkjet. He was trying to print a B/W document, but the printer refused to print because the yellow ink cart was depleted. Granted, this is second hand info (to me; third-hand to you,) but it makes me puspicious.

    With an inkjet, it'd be pretty obvious if it was "phantom" printing all over a page that was just supposed to have B/W text up top. Something linear at the beginning of a page wouldn't draw as much attention. Unfortunately, I don't have access to the printer in question, otherwise I would've already confirmed that it does or does not print the dots. Our corporate Brother HL-4040CN color laser definitely prints the dots. We tested it last week.

  5. Re:Multiple coconuts on Birds Give a Lesson to Plane Designers · · Score: 3, Funny
    The coconut? The A4 Skyhawk is a very capable aircraft, and has multiple ordnance configurations. There are two wing mounted pylons, and a center mounted pylon. Each pylon is capable of being fitted with an MCBR - the Multiple Coconut Bomb Rack (later re-named by some pencil-pusher to the Multiple Carriage Bomb Rack.) Captain (now Lt. General, ret) William H. Fitch was instrumental in the development of the MCBR.

    19 NOV 1959 - Fitch flew the first flight of an A-4 Skyhawk carrying a load of 16 Mark 81 inert bombs on what became known as a Multiple Carriage Bomb Rack.
    Guess what those "inert bombs" were ... yep, and the A4 can carry 48 of 'em!

    [oh, and to answer your question: empty weight is about 11000 lbs; max takeoff weight is 24500 lbs.]
  6. Re: limited terms on White Paper Decries RIAA Attempts To Raise Infringement Payouts · · Score: 4, Insightful

    Do you have any idea how ridiculously fucking short 14 years is?!
    Long enough so you have a reasonable time to market your work and make money; short enough that you don't get to sit on your ass for the rest of your life, and short enough that you are prohibited from obstructing other peoples' progress.

    Go re-read the Constitution ...

    To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries.
    As copyright stands now, the term can outlive the author. That's bad. Exactly how does that beyond-death structure encourage the dead guy to create additional works? (hint - it doesn't.)
  7. Re:You do have a contract on Creative Capitalism Gets Microsoft $528M Tax Break · · Score: 1

    Leave the country? Death and taxes ... you can't escape either. Go to a different country, and you'll be compelled to pay different taxes in one form or anther. All countries have governments, and all have police or military enforcement of tax collection. Maybe if you went to the moon ... [this is getting seriously OT.]

  8. Re:You do have a contract on Creative Capitalism Gets Microsoft $528M Tax Break · · Score: 1

    Taxes don't fall under contract law because they're compelled. You don't have a choice. You may not negotiate the tax rate. You may not decline to pay your taxes and refrain from using public infrastructure. Basically, the government compels you to accept the tax burden, and will fine or imprison you if you refuse - and it's tax evasion, not breach of contract. It's not the same situation at all.

    In the restaurant, I can review the menu, decide I don't want to eat there because it's too expensive, and I may leave. The restaurant may not bill me just because I looked at the menu. The concept of an "implicit contract" is completely bogus, and is usually associated with some form of scam or high-pressure sale. It preys on people's intimidation associated with the term "contract," and often is used as leverage to bully people into signing a proper contract (since the "implicit" doesn't have a legal leg to stand on.) The stereotypical timeshare hard-sell comes to mind as an example.

  9. You do have a contract on Creative Capitalism Gets Microsoft $528M Tax Break · · Score: 2, Insightful

    Contracts require three elements: offer, acceptance of offer, and consideration. All three are in-place when you go to a restaurant:
    Offer: The restaurant provides you with a menu, which includes prices
    Acceptance: You reviewed the menu and placed an order for specific items.
    Consideration: The restaurant provided you with food, expecting you to exchange cash.

    Don't gimme any of this fictitious "implied contract" or "social contract" crapola.

  10. AOL does it on How Pervasive is ISP Outbound Email Filtering? · · Score: 1

    About two months ago, I was attempting to send a song sample to someone from an AOL account - the full song is to be used by a professional DJ, and the clip was being used to properly identify the song, as there are dozens of artists and versions. I didn't send the whole song, just the first 20 seconds or so. AOL refused to deliver the email with the MP3 attachment. I just repeated the experiment, and it went through. I guess they decided that blocking all MP3 attachments isn't a great thing to do.

  11. I'm not obligated to help you on RIAA Drops Case, Should Have Sued Someone Else · · Score: 4, Interesting

    If you ask me "did you download this file/commit this crime/say this phrase yesterday?" and I answer "no," I am under no further obligation to assist you. I may know that Joe over there is who you're looking for, but you failed to ask the proper question. You asked a specific question, and I gave a specific answer. Don't get all pissy at me and start claiming that "lie of omission" bullcrap. There is no such thing (more specifically, it's an ethical issue rather than a legal one, but that's a rant for another thread.) Ask the proper question next time. I can't read your mind, and until I can, there's no way for me to know what information you really want unless you ask for it.

  12. Re:Screw carpools on IBM Patents Pricing Motorists Off Highways · · Score: 1

    Alternate routes would be nice too. Highways have a really bad habit of forcing everyone to one pinch-point, simple because there's no alternative. For the DC-residents, I'll cite a glaring example: please cross the Potomac river, starting in Germantown MD. Straight across isn't an option, because the douchebags with money in Great Falls won't allow Rt 28 to put a bridge in. Your only options are to a) go down to the Beltway (with everyone else) and cross the Cabin John bridge (yes, I still refuse to use the crummy "new" name, dammit,) or b) drive up to Point of Rocks near Harper's ferry. [You can try White's ferry if you don't mind waiting a while, but it's not a reliable method in anything but "good river conditions." Yes, it's a real working steel-cable ferry, and it's very low-bandwidth.]

    Similarly, Maryland has it's own set of NIMBY douchebags who have been holding up the Intercounty Connector for about 30 years. So instead of unloading the current highway system, we're forced to clog the hell out of it because there aren't any alternatives. I'd love to not-use the DC Beltway, but I don't have a choice. Until I get my flying car, I won't have a choice.

    As for public transportation, it doesn't go where I need to go. Using the available public modes (i.e. not using a cab,) the bus could get me to the Metro train in 35 minutes. Running the Red Line from Shady Grove to Greenbelt takes about 70 minutes and requires changing from the Red Line to the Green Line train. From there, I'd need to take the Connect-A-Ride "H" Yellow bus to the Laurel Mall. Change to the Connect-A-Ride "E" Green bus to Columbia Mall. Finally, take the Howard Transit Red Route bus to my destination. It can be done, but the total commute time is pushing 4 hours ... each way.

    I don't know about you, but spending my entire life on a bus isn't my idea of a good time. Additionally, I'm often required to trot equipment to the customer's site. Large parcels are a no-no on the DC Metro train.

  13. Re: Budget? on Industrial Robot Arm Becomes Giant Catapult · · Score: 1

    Watching the videos, they have a rather large generator, a boom forklift, the robot, the robot power controller, a pile of bowling balls, and an RV "target." There's serious money here; planning too. They didn't just boogey out into the desert after drinking a few beers one weekend. I fail to understand how they couldn't "budget" for a camcorder ... maybe borrow one from the neighbor or yell upstairs and ask to borrow mom's?

    What, they needed the HD camera to make their YouTube posting look better?

  14. Re:Well if the blogger's aren't willing to act... on Long Term Effects of Gizmodo CES Prank · · Score: 3, Insightful

    What a poor set of choices you've picked. Did you do that to try to mislead people? Are you a politician?

    Not a politician, but I have worked my share of trade show booths. You pay a pretty penny to put your wares on display at a trade show, and as the customer of the trade show, you have expectations as to how the event organizers run the event. If someone pranked my display, I have every expectation that the event organizer will eject said prankster. I didn't include the "do nothing" option because it really isn't an option for the event organizer.

    Having a press credential doesn't make an iota of difference.

    Whoa, clearly you haven't been to a trade show on a press pass. There are tons of perks for the press - give aways, press-only days, non-public demos in the hospitality suite ... The primary point of attending the trade show is to get exposure for your products and services. Demoing to Joe Sixpack might garner a sale (or a handful if he does the word-of-mouth thing.) Demoing to a tech reporter can result in a magazine article that garners hundreds or thousands of sales. The trade rags (electronic or dead-tree is irrelevant) have the audience. The reporters are the focal point that brings your products into view of the desired audience. The reporters are definitely a different class of people at a trade show.

    There are a bunch of bloggers who are trying to establish that blogging is as valid a "press" medium as the traditional outlets. If they're successful in establishing that expectation, they and their peers move up in the food chain. The pranks executed by this handful of bloggers will reflect poorly on the perception of all bloggers. Members of the press are expected to behave in a certain manner - they're supposed to present an unbiased report of events. An individual who is effectively vandalizing a trade show booth can hardly be considered "unbiased." Similarly, if the local NBC affiliate was caught pranking a trade show booth, I'd expect the event organizer to black-list them permanently.
  15. Re:Well if the blogger's aren't willing to act... on Long Term Effects of Gizmodo CES Prank · · Score: 5, Insightful

    Didn't they learn this lesson as a child? "If you want to sit at the adult table, you have to behave like a big kid."

    For a short-term chuckle, they've managed to damage the long-term credibility of bloggers who were actually trying to earn proper press credentials. The trade show guys all know each other; the news will get around. The event organizers have a choice:
    . (a) inconvenience the paying customer by recommending that they cover their IR ports on displays
    . (b) inconvenience the non-revenue-generating bloggers by showing them the door

    The smart ones will do both, though they'll play the good-guy with their customers and issue an article in a newsletter that provides helpful tips to "Make your booth time a better experience!" Bloggers will be downgraded to the status of the great unwashed masses ...

  16. Re:Tortoise? on Airport Profilers Learn to Read Facial Expressions · · Score: 1

    You know what a turtle is?

  17. The "new" Chuck Norris? on Rails Bigwig Rails on Rails Community · · Score: 1

    I fully expect the Chuck Norris jokes to be re-written using "Zed Shaw." Yeah, I read TFA in it's entirety, and I couldn't help but feel that the punch-line was going to be delivered ... real soon. Maybe Zed could cure cancer by roundhouse kicking the teeth out of the Dalai Lama and harvesting his tears ...

  18. Local building codes on Gen Y Hits the Library the Most -- But Not For Books · · Score: 1

    The only reason I've set foot in the library in the last two decades was to get access to the local building codes. I put an addition on my house, and the only publicly available version of the local building codes was in dead-tree format at the local libraries. Unfortunately, these reference items were not available for checkout, so you had to do your research in the library. That truly sucked, as it made doing tradeoffs difficult. Of course, I could have hired a GC to do the work for me, but that would have defeated the purpose.

    The library copies are usually the only publicly available versions of your local laws. Some of the codes are published online, but the lawmakers don't want that information to be too readily available. If it was, we'd be able to identify all the scams they're running.

  19. Re-Runs ad nauseum on Writers Guild Members Look to Internet Distribution · · Score: 1

    I recently had a conversation about the writers' strike. My co-worker was completely oblivious. She had noticed that there seemed to be more re-runs on recently, but otherwise the TV programming seemed pretty normal. Makes me wonder if Joe Sixpack would ever notice if the broadcasters just played re-runs from now on. It'd certainly cut production costs ...

    I still fail to see why this particular industry *needs* a union. The whole sense of entitlement astonishes me.

  20. Thermal Smith Chart? on Is There Such a Thing As Absolute Hot? · · Score: 1

    That would absolutely bend my brain - a thermal equivalent of a Smith Chart.

  21. Re:typing too fast on Burying a Mainframe In Style · · Score: 1

    Erm ... that should read "Pratchett's Scone of Stone in The Fifth Elephant."

    There appears to be a rate-mismatch between the fingers and the grey-matter ...

  22. Re:The Philosopher's Axe on Burying a Mainframe In Style · · Score: 2, Interesting

    This is my father's axe. I've replaced the blade twice and the handle three times, but it's still my father's axe.

    Some more discussion about it here. It's also called the Ship of Theseus Paradox, which the discussion references.

    There's a mention of Pratchett's Scone of Stone in "The Fifth Element." Is that what you're thinking of?

  23. Re:human-powered on Electric Cars to Help Utilities Load Balance Grid · · Score: 1

    An average person is worth about 1/10 hp (75W) on an exercise bike, with the ability to peak up to about 1/4 hp (187W). Folks who are properly trained can do better, but I wouldn't expect your inmate population to fall in the "elite athlete" category. So how many people are currently incarcerated in the US? At the end of 2006, it was slightly more than 2.26 million people. Let's assume you can coax 1/2 of the prisoner population to voluntarily participate. Let's ask for two 2-hour shifts, and schedule for 24-hour operation. That'll require six "teams" of pedalers, resulting in a net population divisor of 12. (75 W per person) * (2.26M persons) * (1/12 participation) = 14.125 MW.

    The last time I checked, the local landfill was running a 50 MW generator off the garbage-gas. I don't think the prisoner-generator will contribute enough ... unless you put a lot more people in prison. Hey! There's the solution!

  24. Democratic mentality on High Earning Spammers Face Tougher Sentences · · Score: 1

    It's a very Democratic mentality. Consider the progressive tax - if you earn more, you're capable of paying more, so therefore you have a higher tax bracket. Folks who have less, pay less on a percentage basis. Same basic idea here.

  25. Re:Intent on Did SCO Get Linux-mob Justice? · · Score: 1

    Yeah, and I "intend" to be a gazillionaire tomorrow. That don't make it so ...

    This is a classic social engineering technique. You're being led to a conclusion. There's strong insinuation that the deal was "transfer of copyrights." As another poster noted, SCO's predecessor couldn't afford to buy the copyrights, so they were excluded. So the clarifying question (that notably wasn't asked above) is:

    Q: Did Santa Cruz actually purchase the copyrights?

    A: No, they couldn't afford them.

    That last question substantially alters your interpretation of the situation, yes?