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User: Neil+Boekend

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  1. Re:Er, wait, what? on Man Tries To Live an Open Source Life For a Year · · Score: 1

    Wouldn't that be "machine code", as it isn't human readable?

  2. Maglev can't go that fast on Why Ultra-Efficient 4,000 mph Vacuum-Tube Trains Aren't Being Built · · Score: 1

    There are some problems with getting maglev to high speeds. Due to the lack of dampening any force will throw it off track quickly. These forces can occur due to inductions, due to imperfectly wound coils (no coil is perfect), due to the rest pressure of air or a lot of other things. The effect of these forces increases greatly with increased speed.

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

    When crashing into a wall @ 4000mph (or worse: skidding over a wall) almost anything becomes a fuel, simply due to the immense heat generated.

    However: since we managed to get airline flight safe we'd get this safe. Safer than driving a car would probably be a breeze. Self induction in the maglev coils could keep you safe in case of an power outage. Sensors in the tube could detect a leak (due to increased air pressure) and thus could prevent crashing into a "wall of air" of 0.02 bar by sending a signal to the train to get it to emergency speed (500 kmh, or 310 mph, would be a useful emergency speed in this case.). Remember, if there is a leak the air has to spread from a small opening to the volume of the tube. This spreading takes time. As a result the "wall of air" will most probably be a length of tube where the pressure gradually rises (barring catrastropical failure of the tube, where the diameter of the tube is the diameter of the hole).

  4. Re:Leave my keyboard alone! on Is It Time To End Our Love Affair With the QWERTY Keyboard? · · Score: 1

    Auto rotate the keyboard layout between QWERTY, Dvorak, Alphabetical and random daily in an entire company as a move "to find the optimal keyboard layout". Claim the test should not be interrupted for 2 years in order to get the dataset complete.
    Then hell will be beyond broken.

  5. Re:Average not the problem on Is Our Infrastructure Ready For Rising Temperatures? · · Score: 1

    Mostly correct. However, as an European I have a fear of the average as well: the average temp in Greenland to be exact. If that increases to above 0 C then the ice on Greenland melts completely (that's simplified). If that happens the gulf stream may get blocked and we are buggered (average temps here would probably drop about 20 C).
    Add to that that the higher sea level means it might get very crowded in my part of the Netherlands.

  6. Re:Average temperature a few degrees higher on Is Our Infrastructure Ready For Rising Temperatures? · · Score: 1

    True, but irrelevant.

  7. Re:Average temperature a few degrees higher on Is Our Infrastructure Ready For Rising Temperatures? · · Score: 1

    Tolerance in temperature means other factors get less attention. Usually this is "price" but sheer strength, durability and water management can be factors too.

  8. Re:Earth won't turn into Venus! on Is Our Infrastructure Ready For Rising Temperatures? · · Score: 1

    1. The global average temperature increase is a measurable outcome.
    2. The amount of extreme weather events is a measurable outcome.
    Not that I claim these have been measured. I can't make heads or tails from the conflicting data presented to me, so I can't make such a claim.
    Despite that I am decreasing my CO2 output (especially where it also offers an economic advantage to me).

  9. Re:Nope. on Is Our Infrastructure Ready For Rising Temperatures? · · Score: 1

    There are 2 problems with concrete:
    1. Concrete requires expansion ridges. They make a lot of noise, increase wear on the tires and are generally uncomfortable on cars with a normal suspension.
    2. Concrete has serious problems with rain. Since concrete isn't porous it must dump the water over the top. (We use ZOAB here in the Netherlands. That's a type of asphalt made of quite large pieces of old asphalt glued together with new bitumen. This creates a lot of 1 cm holes in the asphalt to help dumping rain. The water just flows though the asphalt. The holes seem to lessen the road noise as well.)

  10. Re:'Atomically pure material' on Qubits Stored at Room Temp For Two Seconds · · Score: 1

    Only 99.99% pure? If they think that's pure they should talk with the semicon guys. 99.999999% pure (before doping) is common in electronics.

  11. Re:Atlanta area... on Slashdot Asks: Beating the Summer Heat? · · Score: 1

    Insulation prevents heat from traveling through the insulated part, whether it's preventing the heat from getting inside or the heat from leaving the house.
    Insulating well (at least 10 cm (4 inches) PIR, but 20 cm or more is better of course) and ventilating only in the (relatively) cool night can keep your house relatively cool. If this isn't enough because the outside temperature doesn't drop below a reasonable level during the night then an air conditioning may be the only answer (but those things are damn wasteful. They heat the air around the house so the heat flow back in increases).

  12. Re:"Microsoft's Downfall" on Microsoft's 'Cannibalistic Culture' · · Score: 1

    Linux will be cheaper once the payed preinstalled crapware is available on Linux. Windows doesn't cost the OEM a dime in the end, because the crapware they are payed to preinstall results in enough money to pay for the Windows license (which isn't all that expensive for an OEM).
    Do you really think that PC's came with fucking Norton because the OEMs love Norton? No, its because Norton pays them to install their crap. I'd be baffeled if they installed the same virusscanner on their employee's systems.

  13. Re:Overall rise on Sea Level Rise Can't Be Stopped · · Score: 1

    It's really about "water displacement". About 10 % of an iceberg sticks out of the water, but by definition that's about the amount of shrinkage it has.
    Look at it this way: an iceberg of 1000 kg displaces 1000 kg of water. The iceberg is bigger than 1000 kg of water, because ice has a lower density than water, so some of it sticks out of the surface (it won't fit in the room for 1000 kg of water). Once it melts it'll still be 1000 kg, only now it'll be 1000 kg of water. 1000 kg of water (the melted iceberg) takes as much space as 1000 kg of water (the "hole" in the water where the iceberg was).
    Thus melting floating ice doesn't raise the sea level. Any raising of the sea level by the melting of ice will be because that ice was on land. Antarctica (on land) melting will raise the sea level. Arctica (floating on the arctic sea) melting won't raise the sea level.

  14. Re:Not too bad? on Sea Level Rise Can't Be Stopped · · Score: 1

    We (the Dutch) will probably figure something out and sell it to the USA (and get rich off it)

  15. Re:with regulation, licensing and inspection on Full-Body Airport Scanners Downsizing For Doctors/Dentists · · Score: 1

    I'm not saying it's safe, but it isn't X-ray and it isn't ionising radiation.
    It's between microwave and infra red.
    If you go up in frequency from Thz, the first frequencies you encounter are infra red. Then visible light. After you go up from that you get UV. And if you go up in frequecy from that you get X rays.
    THz scanners may pose a threat, but it's not ionising and thus it poses a different threat (if any)

  16. Re:Difference is Astronomers going postal on you on The Leap Second Is Here! Are Your Systems Ready? · · Score: 1

    And then we'll find out whether the Hubble is a well disguised orbital cannon.

  17. Re:But...Isn't graphene carcinogenic?! on Making Saltwater Drinkable With Graphene · · Score: 1

    Most probably only when breathing it. If it gets into your fresh water. That'll mean you'll drink it, and there it most probably isn't carcinogenic. Add to that the fact that it shouldn't be getting into the fresh water supply during normal operation. If it gets there the filter will be damaged, because that means parts are missing. This means the filter should be replaced as these holes would allow salt water to enter.
    Having said that: don't stop the tests. I'd like to know for sure if it's carcinogenic.

  18. Re:Correction: on Making Saltwater Drinkable With Graphene · · Score: 1

    Yes, but each sodium and chlorine ion is surrounded by a layer of water molecules. It holds these molecules so incredibly tightly it will not let go of them to pass through a hole in the graphene filter. That's why they don't fit through. Now this cluster is still much smaller than most molecules, including prions and urea molecules for example, and definitely smaller than viruses or bacteria. Thus, if the filter blocks these clusters it'll block the viruses and the bacteria as well.

  19. Re:Holes? on Making Saltwater Drinkable With Graphene · · Score: 1

    The gunk doesn't collect in an industrial filter, because it works differently. It's not a big sheet of filter, dirty water on top, clean water out the bottom. It's usually a double walled conical tube. Dirty water goes in the inner tube on the large side. The inner tube wall is the filter. The outer tube lets the cleaned water flow away.
    The small end of the inner tube is connected to a waste tube to continuously dump the gunk. The high flow from the large end to the small end prevents gunk buildup.

    The reason why current filters still need to backwash is because not all the gunk stays on top of normal filters. Some enter the filter itself a bit. The gunk that enters the filter itself can't get out by normal "forward" washing, backwashing forces it out of the filter. These graphene filters can not be entered by gunk, thus back washing should not be needed.

  20. Re:Holes? on Making Saltwater Drinkable With Graphene · · Score: 1

    A desalination plant will consist of many individual double walled filtering tubes. Water conductivity sensors are cheap and can detect the difference between salt water and desalinated water, so they'd be able to detect tearing. If the tube from each of the desalination tubes has a sensor and a valve before the water enters the collection tube then the flow can be switched off before the salt water (and the graphene fragments) enters the collection tube.
    This, off course, will not be necessary if 2 things are the case:
    1.The graphene is used at a fraction of it's strength (the stuff is tough. We may not have affordable pumps yet to put enough water pressure on it to give it any worries).
    2. Graphene (when drank) is harmless. It seems to be, but testing is in order.
    3. ...
    4. Profit.

  21. Re:A foul subject. on Making Saltwater Drinkable With Graphene · · Score: 1

    That test is with perfect sheets. How big can they make perfect sheets nowadays? Tiny imperfections may degrade the strength of the graphene a lot.

  22. Re:They've been trying this for years on Army Creates a Directed Lightning Bolt Weapon · · Score: 2

    You'd need a decent antenna to do so. 50 DB would help to keep your PSU portable and yourself not affected. And way more power than a measily 200 W. Think 20KW, although each 6 dB your antenna is better will halve the power requirement. A better antenna does mean you have to aim better at a target you may not exactly know where it is. With reflections and all the "hot spot" may not be directly at the part you want to fry.
    Firstly: not all signals will be absorbed by your target, some will miss. In a microwave oven the signal is contained, so the energy that missed its target will bounce around and most of it will be absorbed eventually (since it's light speed we are talking about a small fraction of a microsecond with "eventually").
    Secondly: the car may not be a perfect Faraday cage, but is is shielded. I'd expect about 10% of the energy that's properly directed will enter the car. Most cars have their ECU's under a metal hood. The direct front is usually covered by a metal cooler. These will deflect your signal. It may even be needed to bounce the signal off some part under the hood you can hit directly in order to hit the ECU indirectly. All in all it would be difficult to get it practical.

  23. Re:So... on Ubuntu Lays Plans For Getting Past UEFI SecureBoot · · Score: 1

    If I understand correctly, once a signed bootloader is installed this bootloader can run any OS. UEFI Secureboot only checks the files loaded from the UEFI "BIOS". Which files are loaded by the files loaded from UEFI isn't checked.
    So, assuming the UEFI loads a signed bootloader, the bootloader can run anything it wants.

  24. Re:What About Anti-Matter? on Missing Matter, Parallel Universes? · · Score: 1

    And never forget when dealing with kilos of antimatter: The explosion above Hiroshima was the equivalent of less than half a gram of antimatter annihilating less than half a gram of matter. You are proposing an annihilation reaction of about 2000 times that.

  25. Re:Not parallel universes on Missing Matter, Parallel Universes? · · Score: 1

    And remember: its difficult and dangerous to travel between universes if you haven't got someone who has been treated with Cortexiphan with you.