links for 2008-12-23

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Turn or go straight? Quick! : Dot Physics This is a classic problem. You are in a car heading straight towards a wall. Should you try to stop or should you try to turn to avoid the wall? Bonus question: what if the wall is not really wide so you don't have to turn 90 degrees? (tags: physics…
The Voltage Gate : Why Jurassic Park Is Not a Pro-Science Movie Because Michael Crichton is a writer of Luddite Fiction (tags: books literature movies society culture) A consistent, worldwide association between short sleep duration and obesity '"[The study] raises the unanswered question yet…
EzraKlein Archive | The American Prospect "If you indeed instituted the calls to flatten out the federal tax distribution, the influence of state and local taxes would leave you with an incredibly regressive tax structure, not a slightly less progressive tax structure. Which is something to keep…
Spins spotted in room-temperature silicon - physicsworld.com "Physicists in the Netherlands are the first to show that spin-polarized electrons can be injected into silicon at room temperature. The team injected the electrons into both p-type and n-type silicon and measured how long the…