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Marcus Maertens

Enigma hero Alan Turing should be pardoned, leading scientists claim - Telegraph - 0 views

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    Stephen Hawking is also in for that
Ma Ru

Information Preservation and Weather Forecasting for Black Holes - 2 views

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    S. Hawking argues black holes might not exist: "The absence of event horizons mean that there are no black holes - in the sense of regimes from which light can't escape to infinity." Physicists will likely appreciate...
Marcus Maertens

Stephen Hawking: 'There are no black holes' : Nature News & Comment - 1 views

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    Event Horizon - a modern myth?
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    GR is valid on large scales and is, therefore, a simplification of the unknown GUT. As such, the mathematical solutions obtained in GR are strictly speaking valid only within GR. Certainly, the solution called black hole is an extremely heavy object and at the same time extremely small - a point without geometrical extension. The latter is heavily in conflict with the validity range of the underlying theory and, hence, makes lots of people (including experts unlike me) question the concept of black holes despite the fact that something has been "observed" which fits into this concept. Regarding the movie: Event Horizon might be a myth but it emphasizes what Sante said in on of his presentations: Don't use a black hole for travelling, take the worm hole instead. The constructor of Event Horizon created a black hole not considering that the damn thing has no exit...where did he think the Event Horizon would end?
Nina Nadine Ridder

Is Hawking any closer to solving the puzzle of black holes? - 2 views

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    After this lunch lecture probably not as ground breaking as I thought earlier but still an interesting read... "The new solution involves supertranslations, something that I have yet to get my head properly around. But it seems to rely on the well known fact that an "image" of infalling matter seems to get imprinted onto the "surface" of a black hole."
Thijs Versloot

Lasers May Solve the Black Hole Information Paradox - 0 views

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    "In an effort to help solve the black hole information paradox that has immersed theoretical physics in an ocean of soul searching for the past two years, two researchers have thrown their hats into the ring with a novel solution: Lasers. Technically, we're not talking about the little flashy devices you use to keep your cat entertained, we're talking about the underlying physics that produces laser light and applying it to information that falls into a black hole. According to the researchers, who published a paper earlier this month to the journal Classical and Quantum Gravity (abstract), the secret to sidestepping the black hole information paradox (and, by extension, the 'firewall' hypothesis that was recently argued against by Stephen Hawking) lies in stimulated emission of radiation (the underlying physics that generates laser light) at the event horizon that is distinct from Hawking radiation, but preserves information as matter falls into a black hole."
Joris _

Hawking: Aliens are out there, likely to be Bad News * The Register - 3 views

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    I think it's time to quote "Calvin & Hobbes" (yes, I'm still the guy who knows a C&H for any situation in life) "Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us." One should sue this idiot for racism against extraterrestrials!!
pacome delva

Grandma Plays Favorites -- Balter 2009 (1028): 1 -- ScienceNOW - 1 views

  • A new study finds support for the "grandmother hypothesis," the idea that older women spread their genes most effectively by helping their daughters take care of their children.
  • Thus paternal grandmothers were most beneficial to the survival of their granddaughters and least beneficial to the survival of their grandsons, while maternal grandmothers showed an intermediate effectiveness. Experts are thrilled by the findings. "Wow, very interesting," says Hawkes. "The consistent results across seven populations ... seem to clarify previously inconsistent results." Lorena Madrigal, an anthropologist at the University of South Florida in Tampa, calls the study "an important contribution to a topic of great interest to evolutionary biologists."
Francesco Biscani

Slashdot Science Story | First Acoustic Black Hole Created - 0 views

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    This would be really cool, hawking radiation yeah !
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