ScienceDaily: Top Technology News |
- Nearby galaxy boasts two monster black holes, both active
- Using waste heat from automobile exhaust
- An Alice-in-Wonderland universe? Physicist discovers an apparent cosmic parity violation
- Ultrathin copper-oxide layers behave like quantum spin liquid
- Physicists apply Einstein's theory to superconducting circuits
- NASA's Dawn spacecraft approaches protoplanet Vesta
| Nearby galaxy boasts two monster black holes, both active Posted: 10 Jun 2011 01:46 PM PDT A study using NASA's Swift satellite and the Chandra X-Ray Observatory has found a second supersized black hole at the heart of an unusual nearby galaxy already known to be sporting one. The galaxy, which is known as Markarian 739 or NGC 3758, lies 425 million light-years away toward the constellation Leo. Only about 11,000 light-years separate the two cores, each of which contains a black hole gorging on infalling gas.  |
| Using waste heat from automobile exhaust Posted: 10 Jun 2011 10:19 AM PDT With the completion of a successful prototype, engineers have made a major step toward addressing one of the leading problems in energy use around the world today -- the waste of half or more of the energy produced by cars, factories and power plants. New technology is being developed to capture and use the low-to-medium grade waste heat that's now going out the exhaust pipe of millions of automobiles, diesel generators, or being wasted by factories and electrical utilities.  |
| An Alice-in-Wonderland universe? Physicist discovers an apparent cosmic parity violation Posted: 10 Jun 2011 09:56 AM PDT Does our universe have mirror symmetry? That is the question physicist Michael Longo asked. The answer could perhaps be found by studying the rotation directions of spiral galaxies.  |
| Ultrathin copper-oxide layers behave like quantum spin liquid Posted: 10 Jun 2011 07:26 AM PDT Magnetic studies of ultrathin slabs of copper-oxide materials reveal that at very low temperatures, the thinnest, isolated layers lose their long-range magnetic order and instead behave like a "quantum spin liquid" -- a state of matter where the orientations of electron spins fluctuate wildly. This unexpected discovery may offer support for the idea that this novel condensed state of matter is a precursor to the emergence of high-temperature superconductivity -- the ability to carry current with no resistance.  |
| Physicists apply Einstein's theory to superconducting circuits Posted: 10 Jun 2011 06:45 AM PDT Using Einstein's general theory of relativity, scientists have demonstrated that the Josephson junction could be reproduced. The Josephson junction, a device that was first discovered by Brian David Josephson in the early 1960's, is a main ingredient in applications of superconductivity.  |
| NASA's Dawn spacecraft approaches protoplanet Vesta Posted: 10 Jun 2011 06:45 AM PDT NASA's Dawn mission to the doughnut-shaped asteroid belt between Mars and Jupiter is approaching Vesta, some 220 million miles from Earth. Many surprises are likely awaiting the spacecraft.  |
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