News tagged with electric current
Two stopped light pulses interact with each other
(Phys.org) -- For the first time, physicists have experimentally demonstrated the interaction of two motionless light pulses. Because the stopped light pulses have a long interaction time, it increases the ...
May 08, 2012 |
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Solving the solar cell power conversion dilemma
(PhysOrg.com) -- "There is a lot of interest in creating more efficient solar cells that are also simpler than many of the designs common now," Wladek Walukiewicz tells PhysOrg.com. "We think that, throug ...
Jan 24, 2011 |
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Researchers analyze the future of transistor-less magnonic logic circuits
(PhysOrg.com) -- As one of the newest research areas today, the field of magnonics is attracting researchers for many reasons, not the least being its possible role in the development of transistor-less logic ...
Jun 28, 2010 |
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Carbon nanotubes: The weird world of 'remote Joule heating'
(Phys.org) -- A team of University of Maryland scientists have discovered that when electric current is run through carbon nanotubes, objects nearby heat up while the nanotubes themselves stay cool, like a ...
Apr 10, 2012 |
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Unique salt allows energy production to move inland
Production of energy from the difference between salt water and fresh water is most convenient near the oceans, but now, using an ammonium bicarbonate salt solution, Penn State researchers can combine bacterial ...
Technology / Energy & Green Tech
Mar 01, 2012 |
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Wireless power could revolutionize highway transportation, researchers say
A Stanford University research team has designed a high-efficiency charging system that uses magnetic fields to wirelessly transmit large electric currents between metal coils placed several feet apart. The ...
Technology / Energy & Green Tech
Feb 01, 2012 |
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Voltage increases up to 25% observed in closely packed nanowires
(PhysOrg.com) -- Unexpected voltage increases of up to 25 percent in two barely separated nanowires have been observed at Sandia National Laboratories.
Dec 07, 2011 |
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Montpellier team turns tables on robot-human interactions (w/ video)
(PhysOrg.com) -- Robots have entered a newer phase of serving, not obeying. for use in medical settings. Chapter one in robotics history encouraged a perception of clever little machines skating around with ...
Nov 18, 2011 |
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Could a computer one day rewire itself? New nanomaterial ‘steers’ current in multiple dimensions
Scientists at Northwestern University have developed a new nanomaterial that can "steer" electrical currents. The development could lead to a computer that can simply reconfigure its internal wiring and become an entirely ...
Nanotechnology / Nanomaterials
Oct 16, 2011 |
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Magnetic memory and logic could achieve ultimate energy efficiency
Future computers may rely on magnetic microprocessors that consume the least amount of energy allowed by the laws of physics, according to an analysis by University of California, Berkeley, electrical engineers.
Jul 01, 2011 |
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World record: The strongest magnetic fields created
On June 22, 2011, the Helmholtz-Zentrum Dresden-Rossendorf set a new world record for magnetic fields with 91.4 teslas. To reach this record, Sergei Zherlitsyn and his colleagues at the High Magnetic Field Laboratory Dresden ...
Jun 28, 2011 |
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Chandra finds superfluid in neutron star's core
(PhysOrg.com) -- NASA's Chandra X-ray Observatory has discovered the first direct evidence for a superfluid, a bizarre, friction-free state of matter, at the core of a neutron star. Superfluids created in ...
Feb 23, 2011 |
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Electrical brain stimulation improves math skills
By applying electrical current to the brain, researchers reporting online on November 4 in Current Biology, have shown that they could enhance a person's mathematical performance for up to 6 months withou ...
Medicine & Health / Medical research
Nov 04, 2010 |
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Jellyfish protein could be used to power nanodevices
(PhysOrg.com) -- Researchers in Sweden have been liquidizing thousands of specimens of a common North American jellyfish to extract a protein that could be used in microscopic fuel cells.
Oct 07, 2010 |
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Tiny generators turn waste heat into power
The second law of thermodynamics is a big hit with the beret-wearing college crowd because of its implicit existential crunch. The tendency of a closed systems to become increasingly disordered if no energy is added or removed ...
Sep 28, 2010 |
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Electric current
Electric current is the rate of flow of electric charge. The electric charge that flows is carried by, for example, mobile electrons in a conductor, ions in an electrolyte or both in a plasma.
The SI unit of electric current intensity is the ampere. Electric current is measured using an ammeter.
For more information about Electric current, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
