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Contents contributed and discussions participated by pacome delva

pacome delva

A Brain Wave Worth a Thousand Words - ScienceNOW - 0 views

  • In a new study, neuroscientists connected a network of electrodes to the hearing centers of 15 patients' brains (image above) and recorded the brain activity while they listened to words like "jazz" or "Waldo." They saw that each word generated its own unique pattern in the brain. So they developed two different computer programs that could reconstruct the words a patient heard just by analyzing his or her brain activity.
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    wow impressive. Could be super useful for astronauts !
pacome delva

Physics World reveals its top 10 breakthroughs for 2011 - physicsworld.com - 4 views

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    hello, funny bug on diigo ! I shared this link on 16 Dec and Sante on 22 Dec, but my share disapeared...
pacome delva

[1107.5728] The network of global corporate control - 1 views

  • Abstract: The structure of the control network of transnational corporations affects global market competition and financial stability. So far, only small national samples were studied and there was no appropriate methodology to assess control globally. We present the first investigation of the architecture of the international ownership network, along with the computation of the control held by each global player. We find that transnational corporations form a giant bow-tie structure and that a large portion of control flows to a small tightly-knit core of financial institutions. This core can be seen as an economic "super-entity" that raises new important issues both for researchers and policy makers.
pacome delva

Orbiting standards lab could improve climate predictions - physicsworld.com - 2 views

  • Policy makers would be much better placed to combat the effects of global warming if scientists had access to accurate measurements of the Earth's radiation balance from a dedicated satellite, claims an international group of physicists.
  • it estimates that the satellite could cut a decade or more from the time needed to make useful projections of global temperature at the end of the 21st century.
pacome delva

Galaxy clusters back general relativity - 0 views

  • The Copenhagen group discovered that the redshifts agreed with the predictions of both general relativity and f(R) gravity, the theory that tries to avoid dark energy. However, the error bars on the redshifts excluded MOND and TeVeS, the theories that try to avoid dark matter.
pacome delva

The secret lives of photons revealed - physicsworld.com - 0 views

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    very bad article, but nice experiment :)
pacome delva

Gravitational Theory Reproduces Superconducting Circuitry | Physical Review Focus - 0 views

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    Another candidate for analogue gravity ?
pacome delva

Atomic clock is smallest on the market - 2 views

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    Soon caesium in your watch !
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    This small clock is around 10^-12 @1d in stability (loose 1 second after 300000 years) and 50 ns in accuracy. For comparison Galileo and GPS clocks are around 10^-14 @1d in stability and 1 ns in accuracy. And ACES/PHARAO will be around 3*10^-16 @1d in stability and 0.3 ps accuracy.
pacome delva

Bird feathers inspire mirrorless laser - 3 views

  • The design mimics the way light scatters from embedded air pockets found in certain bird feathers.
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