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Science

Colliding Particles Can Make Black Holes After All 269

Posted by Soulskill from the act-now-while-supplies-last dept.
cremeglace writes with this excerpt from ScienceNOW: "You've heard the controversy. Particle physicists predict the world's new highest-energy atom smasher, the Large Hadron Collider (LHC) near Geneva, Switzerland, might create tiny black holes, which they say would be a fantastic discovery. Some doomsayers fear those black holes might gobble up the Earth — physicists say that's impossible — and have petitioned the United Nations to stop the $5.5 billion LHC. Curiously, though, nobody had ever shown that the prevailing theory of gravity, Einstein's theory of general relativity, actually predicts that a black hole can be made this way. Now a computer model shows conclusively for the first time that a particle collision really can make a black hole." That said, they estimate the required energy for creating a black hole this way to be roughly "a quintillion times higher than the LHC's maximum"; though if one of the theories requiring compact extra dimensions is true, the energy could be lower.

Comment Re:Why do you need a 3D? (Score 1) 292

by scasagrande (#30784298) Attached to: Porn Industry Tiptoes Into 3D Video
The polarization for passive glasses is circular, so alignment isn't an issue.

The question of active/passive glasses is generally a trade-off between display cost and glasses cost. Most passive technologies for the home also involve reduction in vertical resolution (where alternate lines are polarized differently). Active technologies involve a reduction in frame rate (or an effective doubling in frame rate to recover).

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The trouble with doing something right the first time is that nobody appreciates how difficult it was.

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