Quantum Astronomy: The Heisenberg Uncertainty Principle
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This is the second article in a series of four articles each with a separate explanation of different quantum phenomena. Each article is a piece of a mosaic, so every one is needed to understand the final explanation of the quantum astronomy experiment we propose, possibly using the Allen Array Telescope and the narrow-band radio-wave detectors being build by the SETI Institute and the University of California, Berkeley.
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A bizarre scenario takes theories of modern cosmology to the limit.
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Astrophysicists find a star-like object with a surface temperature just one tenth that of the Sun.
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Transmission of a secret encryption key in Vienna shows that 'entangled' photons can withstand the rigors of the real world.
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A telescope with a 4-inch diameter -- about the size that some backyard astronomers might use -- tracked the periodic dimming of light from a bright star 500 light-years away.
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IBM Corp. researchers are touting one of the tiniest pieces of art ever made &#151; an image of the sun made from 20,000 microscopic particles of gold. The precision required is a breakthrough that heralds ultra-miniature sensors, lenses and wires inside nanoscale circuits of the future.
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A telescope arms race is taking shape around the world. Astronomers are drawing up plans for the biggest, most powerful instruments ever constructed, capable of peering far deeper into the universe Â and further back in time Â than ever before.
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Recently two books,          by Peter Woit         and         by Lee Smolin,          have been published questioning whether the enormous theoretical        effort applied to the problems of string theory has been        fruitful.  Both books have been reviewed in           several        popular        publications,          and generated substantial discussion both inside and outside of        the physics community.                        One response was published several days ago           by Briane Greene          on the Op-Ed page of the New York Times (also        here).  A          famously grouchy observer          called the editorial a long, wistful plea for patience.  But        what struck me most as I read it was its similarity to the           crackpot index          maintained by John Baez.  So, for fun, I scored it.
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Take a photo tour of mankind's most ambitious physics experiment ever.
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Les versions allemande, franÃ§aise et nÃ©erlandaise sont dÃ©sormais disponibles. La version italienne sera bientÃ´t accessible. Copernic et son partenaire de dÃ©veloppement Ã©conomique international Contraco
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Measuring the minute amount of energy needed to flip the magnetic orientation of a single atom brings researchers closer to making devices that represent bits of information with just a few atoms.
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This is a series of four articles each with a separate explanation of different phenomena. Each of the four articles is a piece of a mosaic and so every one is needed to understand the final explanation of the quantum astronomy experiment we will be proposing to do possibly using the Allen Array Telescope and the narrow-band radio-wave detectors being build by the SETI Institute and the University of California, Berkeley.
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Is this newly discovered feeble point of light the long-sought bona-fide image of an exoplanet? A research paper by an international team of astronomers provides sound arguments in favor, but the definitive answer is now awaiting further observations.
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Some physicists are creating a revolution in the arcane world of ultra-precise clocks. And among them is a researcher who has trouble getting anywhere on time. &quot;I do tend to be a little bit late,&quot; said Jim Bergquist, 58.
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Imagine the weight of a nagging suspicion that what held your world together, a constant and consistent presence you had come to understand and rely on, wasn't what it seemed. That's how scientists feel when they ponder gravity these days.
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Using data from a NASA satellite, an astronomer has simulated the sound that he says followed the birth of the universe. Includes audio.
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Erano responsabili del progetto Nasa che misurÃ² la radiazione cosmicaa microonde. Calcoli fondamentali per verificare la teoria del Big Bang                                            Il Nobel per la fisica agli americani Mather e Smoot