The Pulse

District Administration unveiled what looks to be a very interesting new resource last Friday.


Like the Ed-Tech Insiders at eSchoolNews and the TechLearning bloggers, The Pulse is an online area where many leading and provocative education thinkers will post their thoughts on various issues and actively encourage interaction and debate. Here's just a few of the folks they have lined up:

  • Susan Ohanian
  • Alfie Kohn
  • James Popham
  • David Thornburg
  • There are a bunch of other folks not listed above, so there should be a little something for everybody.

    The contributors don't appear to be holding back any. For example, the title of Gary Stager's initial post is BS and the Art of Crap Detection. Of course I was attracted to this post by Linda Polin: Legislate This: Integrating Technology into School Administration!

    The Pulse has a RSS feed for those of you using aggregators. See you in the discussion boards!

    How to make a black hole

    Here's the science of black holes, from supermassive monsters to ones the size of ping-pong balls.

    Videos
    • There's more than one way to make a black hole, says NASA's Michelle Thaller. They're not always formed from dead stars. For example, there are teeny tiny black holes all around us, the result of high-energy cosmic rays slamming into our atmosphere with enough force to cram matter together so densely that no light can escape.
    • CERN is trying to create artificial black holes right now, but don't worry, it's not dangerous. Scientists there are attempting to smash two particles together with such intensity that it creates a black hole that would live for just a millionth of a second.
    • Thaller uses a brilliant analogy involving a rubber sheet, a marble, and an elephant to explain why different black holes have varying densities. Watch and learn!
    • Bonus fact: If the Earth became a black hole, it would be crushed to the size of a ping-pong ball.

    10 paradoxes that will stretch your mind

    From time-traveling billiard balls to information-destroying black holes, the world's got plenty of puzzles that are hard to wrap your head around.

    Big Think
    Surprising Science
    • While it's one of the best on Earth, the human brain has a lot of trouble accounting for certain problems.
    • We've evolved to think of reality in a very specific way, but there are plenty of paradoxes out there to suggest that reality doesn't work quite the way we think it does.
    • Considering these paradoxes is a great way to come to grips with how incomplete our understanding of the universe really is.
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    China’s artificial sun reaches fusion temperature: 100 million degrees

    In a breakthrough for nuclear fusion research, scientists at China's Experimental Advanced Superconducting Tokamak (EAST) reactor have produced temperatures necessary for nuclear fusion on Earth.

    Credit: EAST Team
    Surprising Science
    • The EAST reactor was able to heat hydrogen to temperatures exceeding 100 million degrees Celsius.
    • Nuclear fusion could someday provide the planet with a virtually limitless supply of clean energy.
    • Still, scientists have many other obstacles to pass before fusion technology becomes a viable energy source.
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