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User: Mark+of+THE+CITY

Mark+of+THE+CITY's activity in the archive.

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Comments · 526

  1. Re:Hmmm... on The Underground History of American Education · · Score: 1
    It won't be as bad as you imply, but there will be enough students "abandoned" by the system for the rest of us to notice. Then bad things will happen, including various deaths.
    People who propose Darwinian solutions such as this one, believe themselves to be out of harm's way. I was in LA during the 1994 protest. There were no safe neighborhoods.
  2. Hmmm... on The Underground History of American Education · · Score: 1

    So we defund and shut down bad schools in poor neighborhoods. Then what?

  3. Weta Digital? on Weta Digital Supercomputer For Hire · · Score: 1

    On first glance I thought it was WETA, the Washington, DC - based PBS station.

  4. Already started, in a small way on Apple Introduces New G5 iMac · · Score: 1

    KCSM, south of San Francisco, stopped analog broadcast on channel 60 and is digital-only. The specific reason is they lost their transmitter site lease. It was a forerunner of things to come, though, to see the blue screen of analog death they had for a week or so...

  5. Re:New Form of Matter? on First 'Atomic Air Force' Observed · · Score: 1

    No. Gas atoms cool into liquids or solids, and on the way exist as clusters of small numbers of atoms. What is special here is that the cluster is formed under controlled conditions, not haphazardly.

    There were a number of researchers trying to understand the condensation process by a variety of experimental processes. As a graduate student, I was looking for molecular clusters with symmetries that lent themselves to further study.

  6. Department on Cooling Toronto Using Lake Ontario · · Score: 1

    Perhaps you could 'minister' to the poster's ignorance. :)

  7. Re:Just two questions on Cooling Toronto Using Lake Ontario · · Score: 1

    They're not using the lake as a heat sink. They are pre-heating the city water supply with excess solar heat, absorbed from buildings.

    There are two benefits that I can see. The buildings don't have to have chiller systems to cool water. Users of city water don't need as much energy to make hot water. Win-win.

  8. Unlikely on Should SETI Be Looking For Lasers Instead? · · Score: 1

    Recollections of a former laser jock; YMMV...

    First, we have to be looking at the right point in space, at the right time, in the right narrow wavelength.

    Second, we have to pick the signal off from everything else. It won't be by the beamwidth because of divergence. It won't be by coherence because real lasers have something called 'coherence length,' at which point that quality is largely lost. This happens at well under inter-stellar distances! For the reason of distance and divergence, it won't be by amplitude.

  9. My own conclusions on Is Typing a Necessary Skill? · · Score: 1

    Piano playing keeps your arm muscles strong. Maybe forcing yourself to slow down for a while can bring accuracy up.

  10. Re:Not a scam, just outdated on EPA Fuel Economy Myth: Too High, Too Low? · · Score: 1

    SUVs are often top-heavy, leading to rollover accidents.

  11. Atmosphere on Terraform Humans First, Then Mars? · · Score: 1

    some sort of air curtain that keeps an oxygen atmosphere inside

    That would let you breathe, but it woudn't protect you from meteors, as Earth's atmosphere does.

  12. Re:Saturn V Engines on Moon Rocket Scrubbed and Blown Dry · · Score: 1

    The link takes you to a Wikipedia article on Apollo 6:

    http://en.wikipedia.org/wiki/Apollo_6

  13. May have happened on Moon Rocket Scrubbed and Blown Dry · · Score: 2, Interesting

    All the launched Saturn V first and second stages are somewhere on the ocean floor. I doubt if they're at reef depth, though.

  14. Re:rusting? on Moon Rocket Scrubbed and Blown Dry · · Score: 1

    Aluminum alloy for the skin. Maybe what appears to be rust streaks are red colored dust streaks.

  15. Re:Saturn V Engines on Moon Rocket Scrubbed and Blown Dry · · Score: 1

    True, but they did have one unmanned launch (before Apollo 8; SA-502, IIRC) that, between vibrations and engine shutdowns, was one hairy launch.

  16. Re:Yep, any day now. By which I mean next 100000 d on Is This The Big One? · · Score: 1

    It will probably happen sooner that a piece of Oahu or other hawaiin island will slough off into the sea, if you're a fan of huge disasters.

    Mid-oceanic volcanoes sink under their own weight after their eruptive period ends. A ringed coral reef forms in the shallow water, and it is called an atoll.

  17. Re:What happens when I click on an earthquake? on Is This The Big One? · · Score: 1

    If everyone clicks on the earthquake at the same time, you slashdot the server, maybe.

  18. Re:Shielding on NASA Studying Energy Shields for Spacecraft · · Score: 1

    Ok, I was thinking gamma only.

  19. Re:Shielding on NASA Studying Energy Shields for Spacecraft · · Score: 1

    Too heavy to be economical to launch from Earth into space.

  20. Re:Most? Who's most? on Bacteria Live Happily in Nuclear Waste · · Score: 1

    It is surprising that gamma radiation that should be mutating or just plain ionizing these bacteria, isn't.

  21. Shielding on NASA Studying Energy Shields for Spacecraft · · Score: 3, Informative
    From the article:
    The atoms of liquid hydrogen are particularly good as a screen for galactic cosmic rays because they don't fragment into secondary particles as much as heavier elements -- like lead -- do when bombarded by high-energy radiation.
    IIRC, bombarding lead with cosmic rays (high energy radiation) produces secondary radiation, not particles. In terresterial radiation shields, a series of layers of metals is needed to provide protection: shield metal layer n+1 absorbs the secondary radiation from layer n.

    Of course, such shields are too heavy for space.
  22. Re:isotopic mix on Manure-Powered Generators On The Rise · · Score: 1

    Thank you.

  23. Bayer Aspirin on Google to be Sued Over Name? · · Score: 1

    WW1, not 2.

    The German Bayer company did buy the trademark back, IIRC from an American company named Sterling Brands. So "Bayer Asprin" in the USA is now from Bayer AG.

  24. Would this be... on Trained Rats for Mine Detection · · Score: 1

    a biowarfare arms race? :P

  25. isotopic mix on Manure-Powered Generators On The Rise · · Score: 1

    Never mind that bomb-grade plutonium is a very different isotopic mix from what you get out of a power reactor
    Do you (or anyone else) know what the isotopic ratios for Pu out of a fast breeder reactor are? I've never seen this published.