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User: DivemasterJoe

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  1. Robinson Crusoe on Mars! on The Real NASA Technologies In 'The Martian' · · Score: 1

    As a kid I loved that film. Mona the Woolly Monkey, oxygen recovery via some crazy rocks that sublimated...also Adam West.

  2. This may be the drone you are looking for: on Making a Real Batcopter, With Parts From the Hardware Store · · Score: 1
  3. Re:Correlation is not causation on Requiring Algebra II In High School Gains Momentum · · Score: 4, Informative

    From TFA:
    Among the skeptics is Carnevale, one of the researchers who reported the link between Algebra II and good jobs. He warns against thinking of Algebra II as a cause of students getting good jobs merely because it is correlated with success. “The causal relationship is very, very weak,” he said. “Most people don’t use Algebra II in college, let alone in real life. The state governments need to be careful with this.”

  4. Maybe... on Egypt Shuts Off All Internet Access · · Score: 1

    Egypt drew the short straw in a secret international lottery to decide who looses all their IPV4 address blocks back into the pool...

  5. Re:At Law School... on Pen Still Mightier Than the Laptop For Notetaking? · · Score: 1

    ...or "It will be now."

  6. Wacom Cintiq 12WX on Best Tablet PC For Classroom Instruction? · · Score: 1

    For my mathematics lectures I have been very happy with my Wacom Cintiq 12WX. It is portable, has a reasonable surface area for writing, and a nice "feel". My personal preference is for Smart Technologies Notebook 10 software but other vendors, such as Interwrite, have similar products. The Smart Technologies software does require a $300 license when used on a non-Smart branded tablet so together with the $1000 for the Cintiq 12WX my setup is a little beyond your stated budget.

  7. This Sounds Familiar on Submersible Glider Powered By Thermal Changes · · Score: 1

    Here's an article written in 2005 about these things: Underwater Robot to Re-Cross Gulf Stream

  8. BBC Horizon Series - 2003 on Evidence Found for Earliest Modern Humans · · Score: 2, Informative

    The cave at Pinnacle Point was featured in a 2003 episode of Horizon titled The Day We Learned to Think .

  9. Particle Impingement on Explosion at Scaled Composites Kills 2, Injures 4 · · Score: 2, Interesting

    Given this incident occurred during a oxidizer flow rate test I am left wondering if particle impingement somewhere in the NO2 system may have been the culprit.

    I blend a great deal of "exotic" breathing gases used for technical scuba operations and one of my primary concerns is having O2 "clean" equipment. The goal is to avoid any particles of material (dust, lubricant, etc) in the valves, lines, regulators, and cylinders that may be forced through very tiny orifices at high speed. The resulting friction inside a high pressure line, valve, or regulator can be enough to cause ignition of the particle. Of course, in the presence of an oxidizer, even a tiny bit of ignited material can cause other components in the system to fail. Valves and regulators are made of brass and have internal components made of nylon and rubber. The resulting cascade of failures can be quite devastating, especially if the pressure vessel is compromised.

    Just a thought...

  10. Re:How about an octopus attacking a 4 foot shark? on Giant Octopus Attacks Sub · · Score: 1

    Those of us who dive the Emearld Waters of the Pacific Northwest United States are usually quite happy to interact with large cephalopods: http://www.seanet.com/~katrinakruse/octopus_on_my_ head.htm