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User: Billy+the+Mountain

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  1. Hydrogen's Infrastructure Problem on Future of Cars: Hydrogen Fuel Cells, Or Electric? · · Score: 2

    Hydrogen has a huge infrastructure problem. Ie., what do you do when you need some electricty to charge something? Reach over and plug it in. Vs. what do you do when you need some hydrogen. Uh, yeah, right.

  2. Re:LOL on Microsoft Finally Selling Xbox One Without Kinect · · Score: 2

    Yeah but I would think that unbundling would be a form of backpeddling.

  3. Sounds Non-Deterministic to me on Mathematical Model Suggests That Human Consciousness Is Noncomputable · · Score: 1

    Isn't noncomputable the same as saying non-deterministic? There are lots of non-deterministic computer operations where the result is based on a database query or a call to a web page where you can't know in advance what the result will be and you also don't really know how long it will take to get the information (if at all).

  4. Selenium on Ask Slashdot: Beginner To Intermediate Programming Projects? · · Score: 1

    Hard to suggest because you don't have a stated goal.

    I think you would be challenged by working with selenium and webdriver to control web browsers for developing web tests. This will involve learning xpath which is recommended knowledge if you don't know it. This skillset is marketable, I might add.

  5. Here's how I do it on Mathematicians Use Mossberg 500 Pump-Action Shotgun To Calculate Pi · · Score: 1

    When I use a Mossberg 500 Pump-Action shotgun to calculate pi I measure the circumference of the barrel and divide it by the diameter. When measured carefully, it get's pretty damn close to 3.14.

  6. Re:China being the lead in space... on Back To the Moon — In Four Years · · Score: 3, Funny

    Hey, the late 1950's called. They want their silly argument back!

  7. Re:NASA needs SpaceX. SpaceX doesn't need NASA. on Back To the Moon — In Four Years · · Score: 2

    It'll work just fine in baloons though.

  8. Speed Walker! on How Did Bill Nye Become the Science Guy? · · Score: 3

    My favorite comedy from Bill Nye was Speeeeeeed Walker, a super hero that always adhered to the rules of the International Speed Walking Association: Heal Toe! Heal Toe!

  9. Thanks Dr. Obvious on Engineers Invent Acoustic Equivalent of One-Way Glass · · Score: 1

    Of course you can eliminate all sounds, duh. You just have to make sure the fans are blowing supersonic air. Sound can't travel upstream supersonically.

  10. I for one.... on Roadable, Vertical-Takeoff Aircraft Is Eager To Hit the Battlefield · · Score: 2

    This is pretty much the future of where helicopter technology is going to go, I think. Eight small propellers are way cheaper and simpler than one huge complex rotor system. The main downside is no autorotation in the case of engine failure (maybe a back-up parachute will be the solution).

    Also the eight engines will probably be replaced by a single or pair of turbines driving generators and then eight small motors will used to drive the propellers/rotors. That reduces complexity and allows the rotors to be controlled electrically/electronically for precise control.

  11. Yeah! Finally! on Google Launches Android Automotive Consortium · · Score: 4, Funny

    "I can't come in to work today because my car has a virus" becomes a legitimate excuse.

  12. ADS-B and bat behavior on Amazon Reveals "Prime Air", Their Plans For 30-minute Deliveries By Drone · · Score: 1

    FAA has a requirement that will be coming up for virtually all aircraft called ADS-B. It's basically a self-imposed tracking system that broadcasts your position in all three axes and your ground speed. It's in an unencrypted form so that any aircraft in flight can receive positions from nearby aircraft. My guess is the FAA will mandate that the drones be so equipped.

    Another observation: Here in Texas where there a pockets of huge populations of Mexican free tail bats, there is an interesting thing that happens when they emerge to forage on insects. They all stream out following each other in a main column (that can actually be seen on radar) and then branch out sort of resembling a tree. It would probably make sense for package distribution to follow a similar model where the route is not a straight line but a predictable route. Outgoing drones flow along in a pre-set column and incoming drones flow along in another distinct column. Bats on radar

    BTM

  13. Re:Too bad on Duke Univ. Device Converts Stray Wireless Energy Into Electricity For Charging · · Score: 4, Funny

    Ohm my god!

  14. Re:WTF on Largest US Power Storing Solar Array Goes Live · · Score: 4, Insightful

    Do you think they vent the steam to the atmosphere? Or do you think they might put it in a closed loop so they can reuse the water?

  15. Why are they called cells? on Leaked Documents Detail Al-Qaeda's Efforts To Fight Back Against Drones · · Score: 1

    Whenever it's a terrorist collaboration they are called cells? Why don't they just call them teams or work groups? Then they can start buying those motivational posters, have team-building programs, etc.

  16. Re:The solution to pollution is dilution on The Secret Effort To Clean Up a Former Soviet Nuclear Test Site · · Score: 1

    Plutonium is not highly radioactive. Take a slug of Plutonium 239, wrap it in a plastic bag, stick it in your pocket and you are good to go.

    Highly radioactive elements have short half-lives.

  17. Cool but probably not feasible... on Elon Musk's 'Hyperloop': More Details Revealed · · Score: 3, Insightful

    The problem I see with this is while it's nice to dream about 800 mph travel, I can't imagine that it would be feasible to construct a track or tube that could follow the terrain at that speed and still maintain passenger comfort. If you are building above-ground supports, you don't want them to be 500 ft tall as would probably be required in order to keep the tube straight enough for passenger comfort and safety.

  18. This is potentially huge on Nitrogen Fixing Bacteria That Can Colonize Most Plants Discovered · · Score: 3, Interesting

    Ammonia is the second only to petrochemical production and 83% goes to fertilizer. If the bacteria can replace most requirements for nitrogen fertilizer this will drastically reduce reliance on energy for agriculture, especially the reducing natural gas that is converted to hydrogen to make Ammonia

  19. Always use multiple sources of information on College Students Hijack $80 Million Yacht With GPS Signal Spoofing · · Score: 2

    Not a skipper, but I do fly. If I was on the bridge, at some point I would have noticed that the Magnetic compass heading was not matching the GPS heading.

    There are many different GPS-like systems available now. Glonass is the Russian version and has been available for a long time. Also the EU has Galileo coming on line real soon now. Also heard about both China and India developing their own. Units that can rely on multiple sources would definitely be harder to spoof.

    If you feared that you were under GPS spoof attack while using the GPS on your phone, you could fairly easily detect this by writing an app that compares the GPS heading with your magnetic heading.

  20. Fun Fact on Around 2,000 Fukushima Workers At Risk of Thyroid Cancer · · Score: 1

    Good sources of natural dietary iodine include kelp, and other sea vegetables and fish as well. So the traditional Japanese diet has a helpful side-effect of tending to limit the uptake of Iodine-131 into the Thyroid and other body glands.

  21. Re:The TRUE test on Bell Labs Break Record With 31Tbps Via a Single 7200km Optical Fibre · · Score: 1

    What I find interesting about this is, the old test involved a station wagon full of magnetic tapes. But allowing for technology advances in both media and telecommunications, it seems that telecommunications is winning the day. Though 155 lasers all running at different frequencies sounds pretty exotic but maybe you can just put them all on a few chips. (don't ask me to connect up all the fibers though!)

  22. The TRUE test on Bell Labs Break Record With 31Tbps Via a Single 7200km Optical Fibre · · Score: 1

    Does this beat out the station wagon loaded with 500 kgs. of optical media averaging 50 km/hr?

    Units should probably be TerraBit / Sec / Km.

  23. Re:Nuclear steam on New Thermocell Could Turn 'Waste Heat' Into Electricity · · Score: 0

    Eliminating Steam from a Nuclear Reactor is totally feasible. Probably the most economical way to do it is a Brayton Cycle system:
    http://en.wikipedia.org/wiki/Brayton_cycle

    This has the great advantage of eliminating the high-pressure and associated containment requirements that efficient steam turbines require. Plus it's probably much more efficient than what's being described here.

  24. Re:US had Same Cockpit Hierarchy Problem in 70s on Malcolm Gladwell On Culture and Airplane Crashes · · Score: 1

    Totally agree. Paper modding you up +1 informative!

  25. Re:Aren't these just workshops? on In Praise of Hackerspaces · · Score: 1

    Whoooosh!