News tagged with power flow
In radiation 'ventriloquism,' electromagnetic waves travel backwards
Sep 23, 2008 |
4.5 / 5 (81) |
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(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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3-D doppler ultrasound helps identify breast cancer
Oct 21, 2008 |
3 / 5 (2) |
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Three-dimensional (3-D) power Doppler ultrasound helps radiologists distinguish between malignant and benign breast masses, according to a new study being published in the November issue of Radiology.
Generating electricity from air flow
Nov 22, 2009 |
3.5 / 5 (11) |
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A group of researchers at the City College of New York is developing a new way to generate power for planes and automobiles based on materials known as piezoelectrics, which convert the kinetic energy of motion into electricity. ...
Researchers discovers how strain at grain boundaries suppresses high-temperature superconductivity
Jun 17, 2009 |
5 / 5 (4) |
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Researchers at the National Institute of Standards and Technology (NIST) have discovered that a reduction in mechanical strain at the boundaries of crystal grains can significantly improve the performance ...
'Smart' fridges stay cool by talking to each other
Jan 13, 2009 |
not rated yet |
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(PhysOrg.com) -- 'Smart' fridges that run on renewable electricity and are capable of negotiating the most energy efficient way to keep food cold have been developed by researchers from CSIRO’s Energy Transformed ...
Going With the Flow: Using Star Power to Better Understand Fusion
Sep 11, 2009 |
3.8 / 5 (4) |
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(PhysOrg.com) -- UC San Diego researchers are using “star” power to help ignite the field of fusion, which is being looked at as a future reliable green energy source. Under a new $5.8 million five-year grant ...
Achieving optimal efficiencies for nanoengines
Apr 29, 2009 |
3.8 / 5 (8) |
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(PhysOrg.com) -- "There's a lot of recent interest in understanding the functioning and optimal performance of small systems," Katja Lindenberg tells PhysOrg.com. Lindenberg is a scientist in the Department of Chemistry and Bi ...
THEMIS satellite tracks electrical tornadoes in space
Space & Earth / Space Exploration
Apr 23, 2009 |
4.5 / 5 (4) |
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(PhysOrg.com) -- Earth-bound tornadoes are puny compared to "space tornadoes," which span a volume as large as Earth and produce electrical currents exceeding 100,000 amperes, according to new observations ...
Artificial Leaves Generate Power by Pumping Water
Aug 03, 2009 |
4.3 / 5 (20) |
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(PhysOrg.com) -- Natural leaves constantly lose water through evaporation, as the water in their veins is pumped up to the top of the tree. This process, called transpiration, could also create a mechanical ...
Kites flying in high-altitude winds could provide clean electricity
Jun 24, 2009 |
4.6 / 5 (44) |
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(PhysOrg.com) -- At any moment, the winds in high-altitude jet streams hold roughly 100 times more energy than all the electricity being consumed on Earth, according to a study by Stanford environmental and ...
US energy use drops in 2008
Jul 20, 2009 |
4.7 / 5 (17) |
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Americans used more solar, nuclear, biomass and wind energy in 2008 than they did in 2007, according to the most recent energy flow charts released by the Lawrence Livermore National Laboratory. The nation used less coal ...
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