News tagged with power flow
In radiation 'ventriloquism,' electromagnetic waves travel backwards
Sep 23, 2008 |
4.5 / 5 (81) |
10
(PhysOrg.com) -- Typically, electromagnetic waves travel away from their sources. For instance, a radar system emits radio waves that travel all the way to a target, such as a car or plane, before being reflected ...
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Digital Quantum Battery Could Boost Energy Density Tenfold
Dec 22, 2009 |
4.9 / 5 (43) |
15
(PhysOrg.com) -- Physicists theorize that quantum phenomena could provide a major boost to batteries, with the potential to increase energy density up to 10 times that of lithium ion batteries. According to ...
Physicists Demystify Utility of Power Factor Correction Devices
Dec 16, 2009 |
4.3 / 5 (8) |
3
(PhysOrg.com) -- If you've seen an Internet ad for capacitor-type power factor correction devices, you might be led to believe that using one can save you money on your residential electricity bill. However, ...
Greenland glaciers: What lies beneath
Space & Earth / Earth Sciences
Dec 15, 2009 |
3.6 / 5 (5) |
2
Scientists who study the melting of Greenland's glaciers are discovering that water flowing beneath the ice plays a much more complex role than they previously imagined.
New Bacterial Behavior Discovered
Dec 15, 2009 |
4.4 / 5 (7) |
1
(PhysOrg.com) -- Bacteria dance the electric slide, officially named electrokinesis by the USC geobiologists who discovered the phenomenon.
Scientists discover mechanism behind superinsulation
Dec 14, 2009 |
5 / 5 (12) |
14
(PhysOrg.com) -- Scientists at the U.S. Department of Energy's Argonne National Laboratory have discovered the microscopic mechanism behind the phenomenon of superinsulation, the ability of certain materials ...
New structure could produce efficient semiconductor laser sources
Dec 14, 2009 |
4.7 / 5 (3) |
1
(PhysOrg.com) -- University of Wisconsin-Madison researchers have achieved a nanoscale laser structure they anticipate will produce semiconductor lasers in the next two years that are more than twice as efficient ...
Weir in space and dimmed sun creates 200-million-mile-long lab bench for turbulence research
Dec 11, 2009 |
5 / 5 (3) |
0
Physicists working in space plasmas have made clever use of the Ulysses spacecraft and the solar minimum to create a massive virtual lab bench to provide a unique test for the science underlying turbulent ...
VISTA: Pioneering new survey telescope starts work
Dec 11, 2009 |
4.9 / 5 (11) |
1
VISTA is the latest telescope to be added to ESO's Paranal Observatory in the Atacama Desert of northern Chile. It is housed on the peak adjacent to the one hosting the ESO Very Large Telescope (VLT) and shares ...
Spin polarization achieved in room temperature silicon
Nov 27, 2009 |
4.8 / 5 (21) |
0
(PhysOrg.com) -- A group in The Netherlands has achieved a first: injection of spin-polarized electrons in silicon at room temperature. This has previously been observed only at extremely low temperatures, ...
Facebook creates dual-class structure, but no IPO
Nov 24, 2009 |
1 / 5 (1) |
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(AP) -- Facebook has created a dual-class stock structure designed to give founder Mark Zuckerberg and other existing shareholders control over the company.
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