Electric current
hideElectric 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.
News tagged with electrical current
In touch with molecules
Nov 12, 2009 |
5 / 5 (2) |
1
The performance of modern electronics increases steadily on a fast pace thanks to the ongoing miniaturization of the utilized components. However, se-vere problems arise due to quantum-mechanical phenomena ...
Scientists bend nanowires into 2-D and 3-D structures
Oct 21, 2009 |
4.3 / 5 (7) |
0
(PhysOrg.com) -- Taking nanomaterials to a new level of structural complexity, scientists have determined how to introduce kinks into arrow-straight nanowires, transforming them into zigzagging two- and three-dimensional ...
Touch screen gamble: which technology to use
Oct 15, 2009 |
4.5 / 5 (2) |
0
Prompted partly by the iPhone's phenomenal popularity, consumers are demanding and likely to get a wider range of touch screens on many more electronic devices.
Silver Nanoparticles Give Polymer Solar Cells A Boost
Nanotechnology / Nanomaterials
Oct 05, 2009 |
4.3 / 5 (13) |
0
(PhysOrg.com) -- Small bits of metal may play a new role in solar power. Researchers at Ohio State University are experimenting with polymer semiconductors that absorb the sun’s energy and generate electricity. The goal: ...
Special brain wave boost slows motion
Medicine & Health / Neuroscience
Oct 01, 2009 |
4.2 / 5 (5) |
5
Researchers have found that they can make people move in slow motion by boosting one type of brain wave. The findings offer some of the first proof that brain waves can have a direct influence on behavior, ...
Carbon nanotubes could make efficient solar cells
Nanotechnology / Nanomaterials
Sep 10, 2009 |
5 / 5 (21) |
13
(PhysOrg.com) -- Cornell researchers fabricated, tested and measured a simple solar cell called a photodiode, formed from an individual carbon nanotube.
Researchers Pressing on in Their Mission to Power the Nanodevices of Tomorrow
Nanotechnology / Nanomaterials
Jul 27, 2009 |
not rated yet |
0
(PhysOrg.com) -- Much like humans, materials are capable of some pretty remarkable things when they're placed under pressure. In fact, under the right conditions, materials can even produce electricity.
COIL Electric Guitars Leave No Tone Unturned
Jul 07, 2009 |
3 / 5 (2) |
2
(PhysOrg.com) -- University of Maryland electrical and computer engineering professor Bruce Jacob pried open his new electric guitar and wondered why he couldn't get more sounds out of it.
New instrument has potential to detect water deep underground on Mars (w/ Video)
Space & Earth / Space Exploration
Jun 24, 2009 |
4.7 / 5 (3) |
1
(PhysOrg.com) -- With the whoosh of compressed gas and the whir of unspooling wire, a team of Boulder scientists and engineers tested a new instrument prototype that might be used to detect groundwater deep ...
THEMIS satellite tracks electrical tornadoes in space
Space & Earth / Space Exploration
Apr 23, 2009 |
4.5 / 5 (4) |
1
(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 ...
The Day the Sun Brought Darkness (w/Video)
Space & Earth / Space Exploration
Mar 13, 2009 |
4.4 / 5 (10) |
1
On March 13, 1989 the entire province of Quebec, Canada suffered an electrical power blackout. Hundreds of blackouts occur in some part of North America every year. The Quebec Blackout was different, because ...
Physicist develops battery using new source of energy
Mar 11, 2009 |
4.7 / 5 (51) |
11
Researchers at the University of Miami and at the Universities of Tokyo and Tohoku, Japan, have been able to prove the existence of a "spin battery," a battery that is "charged" by applying a large magnetic ...
New plasma transistor could create sharper displays
Feb 04, 2009 |
4.7 / 5 (9) |
2
(PhysOrg.com) -- By integrating a solid-state electron emitter and a microcavity plasma device, researchers at the University of Illinois have created a plasma transistor that could be used to make lighter, ...
New breast cancer test under study
Jul 22, 2008 |
5 / 5 (2) |
1
Whether a painless, portable device that uses electrical current rather than X-ray to look for breast cancer could be an alternative to traditional mammograms is under study at the Medical College of Georgia.
