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User: Rhywden

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Comments · 280

  1. Re:Space? on Thorium: The Wonder Fuel That Wasn't · · Score: 1

    Well, that was pretty much a given form the start ;)

  2. Re:Space? on Thorium: The Wonder Fuel That Wasn't · · Score: 1

    It's not actually difficult, it's expensive. The thing is, because we're not dealing with an inertial system but with a rotating system, we need to cancel the orbital velocity in order to actually hit the Sun. One figure I've seen puts the velocity we need to achieve at 32 km/s. Escape velocity for Earth amounts to 11 km/s, by the way.

    That's quite a lot and makes the whole thing a bit impractical (Rockets don't scale well and, according to the calculations I've seen, a Saturn V would only have a payload of ~60 kg of actual radioactive material. Don't forget, you also need to shield the stuff in case the rocket malfunctions inside the atmosphere, aside from the higher fuel requirements).

    Coincidentally, shooting something into deep space only requires about 41% of the energy needed to reach the Sun.

    All numbers without complicated stuff like slingshot maneuvers.

  3. Re:Never lecture when you can have a seminar on Lectures Aren't Just Boring, They're Ineffective, Too, Study Finds · · Score: 2

    That's nice and all, but you still have a hard-wired limit to your attention span.

    It's pretty much standard in teachers' education (at least in Germany) that you have to "switch gears" from time to time or you may as well rhapsodize about the colour blue - nobody will be really listening after a while.

    It doesn't mean that lectures don't work. It just means that only doing lectures is not as effective.

  4. Re:We should use the moon as a hazardous waste dum on Thorium: The Wonder Fuel That Wasn't · · Score: 4, Insightful

    Yes. And that solar-collision orbit requires a speed of 31 km/s. You're forgetting that you're on an elliptical orbit around the sun - every nudge towards the sun merely reduces the smaller axis of the elliptical trajectory around the sun.

    The "nudge" would work if both objects (target and object to push) were at relative rest. But they aren't at rest. You start out with the Earth's orbital velocity around the Sun.

    That, by the way, is also the reason why missions to Mercury are rare - it's quite expensive. By the way: Shooting stuff completely out of the solar system would only require about 41% of the energy you need to get to the Sun. Sounds weird, but that's orbital mechanics for you.

  5. Re:We should use the moon as a hazardous waste dum on Thorium: The Wonder Fuel That Wasn't · · Score: 1

    Doesn't work. You'd still need to cancel Earth's orbital velocity - which means that you'll have to achieve a velocity of about 32 km/s (in contrast to merely 11 km/s to escape the gravity field of Earth). Which means that a "gentle nudge" won't do.

  6. Re:It's called a safety... on A Look at Smart Gun Technology · · Score: 1

    And you always did things the way your parents taught you? My experience with children of all sorts differs somewhat, whether you "discipline" them or not. I mean, if they never did any wrong you wouldn't have to "discipline" them in the first place!

    A gun that's locked away in a gun safe is the only gun that's reliably safe for/from children.

  7. Re:Stupid gimmick, and I even don't care about gun on "Smart" Gun Seller Gets the Wrong Kind of Online Attention · · Score: 1

    Right. Equally plausible scenarios:

    They beat him up but let him live.
    He gets the hell out of their way and the burglars get away

    You're forgetting one fact: He already shot two burglars - which choice exactly does the 3rd one have? Surrender and hope for the best? Naw. The situation had already escalated to one involving lethal force which makes a peaceful outcome pretty unlikely. It's pretty rare for violent situations to de-escalate without involving an outside force.

  8. Um, this is a timespan of more than a decade, we're talking about here. The technological advances in hardware alone should mandate an upgrade.

    And last time I looked, a filing cabinet is very different from IT. Unless you're calling yourself a carpenter when replacing a graphics card?

  9. Re:Cellular doesn't work on WSJ: Prepare To Hang Up the Phone — Forever · · Score: 2

    You're forgetting the windows. Chances are that the windows are also coated in a thin metallic film (intended to reflect IR) to either keep heat out or in.

    Can see that easily at my parents home - as long as the glass door to the garden is open, their handheld has a connection to the base station. Glass door is shut - connection to the base station is lost.

  10. Re:UPMC Presbyterian Hospital in Pittsburgh on Gunshot Victims To Be Part of "Suspended Animation" Trials · · Score: 1

    First of all, the situations wherein you are eligible to become an organ donor are usually not as time critical as for this procedure. I mean, in most cases there is time to actually ask the relatives or search for the organ donor card.
    The cases in question? They're a matter of mere minutes.

    Secondly, you're asking for a multi-million dollar campaign. The fun part with this? Your companions (one who also replied to my first post on this topic) complain about medicine being too expensive. Well, sure, if you have to cover every angle in your moron lawyer-sharkfest society, then you can bet your ass that it's expensive.

  11. Re:UPMC Presbyterian Hospital in Pittsburgh on Gunshot Victims To Be Part of "Suspended Animation" Trials · · Score: 2

    Yeees, because if you're bleeding to death and are probably unconscious to boot, you're in such a great position to make a rational and informed decision.

    It's the nature of this particular beast that there's NO WAY of giving consent.

  12. Re:Space travel on Gunshot Victims To Be Part of "Suspended Animation" Trials · · Score: 1

    Not a viable population size due to lack of genetic variety.

  13. Re:Passengers on More Than 1 In 4 Car Crashes Involve Cellphone Use · · Score: 1

    A normal passenger shuts up when he senses a dangerous situation, or may even alert the driver to a situation.

  14. Re:Still a ways to go on Sulfur Polymers Could Enable Long-Lasting, High-Capacity Batteries · · Score: 1

    Definitely looks interesting, but highly unpractical for vehicles. After all, you have to keep the metal molten all the time. And that means some heavy-duty insulation, something akin to a Thermos bottle with a large volume. The problem then is the fact, that such bottles are not exactly great when it comes to vibrations, abrupt stops and crashes.

  15. Re:Ha! Ha! Ha! on Mt. Gox Gone? Apparent Theft Shakes Bitcoin World · · Score: 1

    Least common denominator and all that.

  16. Re:Heat and noise.... on NVIDIA Launches GTX 750 Ti With New Maxwell Architecture · · Score: 3, Insightful

    By your standard, almost anything would be subjective. Let's go through your line of thinking:

    The tester chose an enclosure you probably don't have at home. As such, the card will not demonstrate the same values in your enclosure at home. As a result the tests are "subjective".

    Power consumption? Well, you've probably got a different PSU. Subjective.

    FPS? You've probably got a different CPU, different OS configuration, motherboard, harddisc... Subjective!

    In summary: If the tester uses the same enclosure for every card they test, I don't see how it's subjective. Sone or dB as a unit of loudness are measurable, as is temperature. Or do you want to tell us that, say, the distance to Betelgeuze is subjective just because you don't happen to have the proper equipment to measure it?

  17. Re:Not a good sign on Apple Rumored To Be Exploring Medical Devices, Electric Cars To Reignite Growth · · Score: 1

    Nokia did that just fine (for a pretty while at least). So, branching out doesn't have to spell doom.

  18. Re:Use an underground cable on Germany's Renewable Plan Faces Popular Resistance · · Score: 1

    I'm all for it - as long as the guys opposing the "normal" cables also pay for the increased costs. Last time I looked DC high voltage cabling was about triple the costs of AC, all things considered (like the need to convert from AC to DC to AC)

  19. Re:Warranty Shouldn't Matter on GPUs Dropping Dead In 2011 MacBook Pro Models · · Score: 2

    Just think of what a boon this kind of thinking would be to the automobile industry!

    A new car mandatory after three years.

  20. Re:Slow news day on Safeway Suspends Worker For Sci-Fi Parody of His Firing · · Score: 1

    Wow. Two weeks of paid vacation. A bit more money for working on Sundays?

    That's "generous"?

    I shudder to think what non-generous work is, then. Probably "no vacation, ever!" and "overtime compensation? Are you dreaming?"

  21. Re:Slow news day on Safeway Suspends Worker For Sci-Fi Parody of His Firing · · Score: 1

    The problem is, however, that the guys ultimately responsible for the failure of Dominick's won't suffer one bit. On one hand you have 6,000 people losing their jobs, on the other hand you have the managers from Safeway who are ultimately responsible for the failure - and those guys always have their golden parachutes at the ready.

  22. Re:There are more french film than you would think on France's 'Culture Tax' Could Hit YouTube and Facebook · · Score: 1
  23. Re:So what? on 60% of Americans Unaware of Looming Incandescent Bulb Phase Out · · Score: 0

    So, because you can't educate your morons, erm, people on the proper way to discard such stuff, we can't replace energy-hungry bulbs?

    Good gracious! Better begin lamenting all the other electronic stuff which is already thrown away by such morons. Or did you think that this is a problem exclusive to LED lighting? Seriously? That's your argument?

  24. Re:Bad math on 60% of Americans Unaware of Looming Incandescent Bulb Phase Out · · Score: 1

    By that logic you also needn't consider the energy costs to manufacture LEDs. Why don't you rant against the guy who originally brought that up instead of me?

  25. Re:So what? on 60% of Americans Unaware of Looming Incandescent Bulb Phase Out · · Score: 1

    With a 40 W bulb, you won't have much of a shadow...