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User: Zorpheus

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  1. Re:not with a bang, but a little heard whimper. on Chinese Rare Earths Producer Suspends Output · · Score: 1

    But mining all their rare earths and continuing to sell them at low prices would be even more short-sighted.
    They will run out of rare earths at some point. Then the prices on the world market will go up, and they have to buy them from other countries for higher prices.
    I don't think that this is about China trying to make money with a monopoly. It is just common sense, and the fight against the poisoning of their environment due to illegal mining.

  2. Re:That would be very cool on Concept Aquatic Rover May Explore a Lake On Titan · · Score: 1

    I would also mention Rosetta, which has done 2 flybys in the asteroid belt and will put a lander on a comet in two years. But of course Saturn is a lot farther away than that.

  3. Re:No redundancy on Three Mile Island Shuts Down After Pump Failure · · Score: 0

    If safety require 4 pumps to run the reactor, why don't they just install 5 pumps then? Then they can keep the reactor running if one dies.

  4. Re:Thoughts... on Space Vs. Poverty Debate In India · · Score: 2

    I would say the conclusion of that writeup is that it is possible to send everyone into space, if we would put all efforts in this.

  5. Re:probably not a worry on Ask Slashdot: Keeping Personal Tech Cool In Extreme Heat? · · Score: 1

    There was a test done in Finland which was also in the news in Germany last winter. The allowed operating temperature ranges for the Samsung Galaxy S2 is -20 deg C to +50 deg C, while for the iPhone it is 0 deg C to 35 deg C. In this test the Galaxy S2 was still working at -30 deg C.

  6. Re:probably not a worry on Ask Slashdot: Keeping Personal Tech Cool In Extreme Heat? · · Score: 3, Interesting

    For the Samsung Galaxy S2 and S3 the maximum operating temperature is already 50 deg C. Can't find the maximum storage temperature atm, but it is probably about 70 deg C then.

  7. Re:No longer vocalizations on Man With World's Deepest Voice Can Hit Infrasonic Notes · · Score: 1

    No, just breathing in and out is the highest "sound" amplitude that someone can generate at 0.189Hz. That does not require a special voice.

  8. On the other side on A Modest Proposal For Sequestration of CO2 In the Antarctic · · Score: 1

    On the other side, storing CO2 in the ground is also neither cheap or save, and having the CO2 released in Antarctica is better than in an inhabited area. Also in my opinion it is better if the CO2 is released within 10 000s or 100 000s of years than if it is stored for eternity, since it is generally needed for life, it is just too much at once now. The lifetime of a CO2 landfill isolated by water ice should be more predictable than the storage under ground.
    So if the lifetime of such a landfill is really that long the idea would make sense.

  9. This is a stupid idea on A Modest Proposal For Sequestration of CO2 In the Antarctic · · Score: 1

    First, I did not read in the article how the storage is supposed to work for a long enough time. The CO2 has to be stored for a time on the order of 10 000 years, since that is the approximate lifetime of CO2 in the atmosphere. At atmospheric pressure the temperature has to stay below -78.5C for that. How is an isolated landfill supposed to achieve that?
    Second, why on Antarctica? His argument is the environmental temperature, which is 226K on average. The process should run at 133K or 152K. The maximum theoretical efficiency of a cooling plant is cooled temperature over temperature difference. So if this is built in Europe with an average temperature of about 280K, it will require only 1.6-1.7 times as much energy as if the condensation is done on Antarctica. I am sure that the cost increase for building the wind farms on Antarctica alone is much higher than that. The high cost of building all this on Antarctica makes this project totally uneconomical.
    Storing the CO2 in the ground, for example in former natural gas deposits makes much more sense than this.

  10. Re:We're running out of planets! on Earth's Corner of the Galaxy Just Got a Little Lonelier · · Score: 1

    We could build the colony inside some kind of baloon. The hull of the baloon could be made of some carbon-based polymer, which can be formed from the CO2 from the atmosphere.
    Hmm, let's build this ;)

  11. Re:We're running out of planets! on Earth's Corner of the Galaxy Just Got a Little Lonelier · · Score: 2

    The upper atmosphere of Venus is much more earth-like though. We just need to figure out how to build a floating colony that can withstand winds of 100m/s.

  12. Re:Don't panic! on Ask Slashdot: Protecting Data From a Carrington Event? · · Score: 1

    I don't know about the sensitivity of flash memory, but a degausser erases with a magnetic field, and I would worry about the strong electric field.
    A strong electric field means large voltages between two distant points. Of course the voltages are negligible on the scale of the actual flash memory, but the problem are the connections.

  13. Re:kinetic energy on Why Ultra-Efficient 4,000 mph Vacuum-Tube Trains Aren't Being Built · · Score: 1

    I mean that: http://en.wikipedia.org/wiki/Tsiolkovsky_rocket_equation. The speed change that a rocket generates does not depend on the initial speed.

  14. Re:kinetic energy on Why Ultra-Efficient 4,000 mph Vacuum-Tube Trains Aren't Being Built · · Score: 2

    Common guys, the grandparent is correct since it is E=m/2 v^2. This can't be correct, don't mod it up.
    Yes it takes the same energy for you to accelerate to 5mph in the train, no matter if the train moves or not. But that ignores that the kinetic energy of the train is reduced at the same time if the train is moving. The engine of the train has to compensate for this, it is spending the additional energy that you don't feel when walking in the train.
    If the train is driven by a rocket then the parent is correct, the energy needed to accelerate the train by 5mph is the same at each speed. But trains normally work by pushing themselves off directly from the earth, and not from the exhaust gases of a rocket, since this saves the energy needed to accelerate the exhaust gases in the opposite direction.

  15. Re:kinetic energy on Why Ultra-Efficient 4,000 mph Vacuum-Tube Trains Aren't Being Built · · Score: 4, Informative

    That is not the same. If you start walking while on the train you give the train a negative impulse, which is decelerating it. You only don't feel it because the train is much heavier than you.

  16. Re:Falling to near zero?? on Algorithmic Pricing On Amazon 'Could Spark Flash Crash' · · Score: 1

    Hell, most of the time one of the oligarchs just buys the startup.

    For that the owner of the startup must sell it. If the prices are high there will be a lot of money to make, so he will only do it for much more than what he spent. This will not happen since many people can launch such a startup, and would do so since they can make a big profit just by selling it.

  17. Re:No, it isn't misleading on Nexus Q Stretches "Made in USA" Label · · Score: 1

    Yes.
    And it is the same for devices made in China. The final assembly is done there since they beat everyone in this with low wages and small profit margins. The expensive parts that require specialists and experience are often made somewhere else.

  18. Re:They solved the frame problem? on Strong AI and the Imminent Revolution In Robotics · · Score: 1

    What I mean is: version one is doing it nearly right. It is doing the thinking needed to get the job done. But what is missing is what the feeling part of the human brain is doing. Just a fast and fuzzy pattern recognition that finds potentially relevant things, and alerts the thinking part of the brain about these.

  19. Re:They solved the frame problem? on Strong AI and the Imminent Revolution In Robotics · · Score: 2

    Ok, maybe I don't get it.
    I think a human does it the following way: he sees the time bomb and this triggers an alert, in the form of anxiety. He knows that the bomb requires his attention because he learned before that bombs are a problem. It is just a limited number of situations and things that are triggering anxiety. The human brain has the advantage that it is constantly checking these in parallel, but a computer checking these subsequently and continuously should also be able to handle this.

  20. Re:Now all we have to account for on Missing Matter, Parallel Universes? · · Score: 1

    Oops I meant dark matter, or just matter, doesn't matter if it is antimatter.

  21. Re:Now all we have to account for on Missing Matter, Parallel Universes? · · Score: 2

    Maybe what was seen was antimatter in two different parallel universes?

  22. Better on Apple Granted Broad Patent On Wedge-Shaped Laptops · · Score: 2

    Lenovo Thinkpad X60, 2006.
    Not as flat, but already the form of a wedge.

  23. Re:Impact energy not the same for small objects on Mosquitos Have Little Trouble Flying in the Rain · · Score: 4, Insightful

    Yeah but if you assume that they touch the floor at the same speed, the amount of energy to be absorbed per body weight is the same for mouse and horse. The force per body weight is even lower for the horse since it has longer legs and therefore more time to slow down. But also the ratio of the cross section of the legs to the body weight is worse, which makhttp://science.slashdot.org/story/12/06/05/0112252/mosquitos-have-little-trouble-flying-in-the-rain#es it worse for the horse again.

  24. Re:Particularly in a press release like that. on Backdoor Found In China-Made US Military Chip? · · Score: 1

    Maybe not the military, but surely the companies using this chip in their weapons, and the manufacturer of it. And if it is a false alert, they will all probably sue someone for pretty big compensations ...

  25. Re:Trademark, not copyright on Chemists Make Olympic Rings On a Molecular Scale · · Score: 4, Informative

    They actually did in 1995, but without success. Just found this as a reference on wikipedia: http://www.autoevolution.com/news/audi-reveals-updated-logo-10315.html