News tagged with radio signals

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Widening the search for extraterrestrial intelligence

"The Search for Extraterrestrial Intelligence (SETI) has been dominated for its first half century by a hunt for unusual radio signals. But as he prepares for the publication of his new book The Eerie Silence: Are We Alone?," ...

dateMar 01, 2010 in Astronomy
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Secure radio signal for central locking

(PhysOrg.com) -- Remote central locking is among the most convenient aspects of modern motoring. Transmission of the radio signal that activates the system is not particularly secure, however. A new encryption ...

dateFeb 01, 2010 in Engineering
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Making it easier to save energy

Fraunhofer scientists are developing programs that help show at a glance how much energy devices are consuming. At the GSMA Mobile World Congress in Barcelona, the researchers will be showing how a cell phone can help save ...

dateJan 15, 2010 in Engineering
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The Sun's Sneaky Variability

Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. ...

dateOct 28, 2009 in Space Exploration
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Astronomers seek to explore the cosmic Dark Ages

No place seems safe from the prying eyes of inquisitive astronomers. They've traced the evolution of the universe back to the "Big Bang," the theoretical birth of the cosmos 13.7 billion years ago, but there's still a long ...

dateOct 15, 2009 in Astronomy
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Wi-Fi signals can see through walls

(PhysOrg.com) -- Researchers at the University of Utah, USA, have discovered that variations in signal strengths in wireless networks can be used to "see" movements of people on the other side of walls or ...

dateOct 05, 2009 in Engineering weblog
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Hurricane Katrina: Phone home

Though New Orleans residents were told to evacuate days before the arrival of Hurricane Katrina, no one could have predicted the real extent of the devastation.

dateJul 06, 2009 in Earth Sciences
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