Electricity
hideElectricity (from the New Latin ēlectricus, "amber-like"[a]) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning and static electricity, but in addition, less familiar concepts, such as the electromagnetic field and electromagnetic induction.
In general usage, the word 'electricity' is adequate to refer to a number of physical effects. However, in scientific usage, the term is vague, and these related, but distinct, concepts are better identified by more precise terms:
Electrical phenomena have been studied since antiquity, though advances in the science were not made until the seventeenth and eighteenth centuries. Practical applications for electricity however remained few, and it would not be until the late nineteenth century that engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry and society. Electricity's extraordinary versatility as a source of energy means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. The backbone of modern industrial society is, and for the foreseeable future can be expected to remain, the use of electrical power.
For more information about Electricity, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with electricity
Cutting greenhouse pollutants could directly save millions of lives worldwide
Nov 25, 2009 |
2.2 / 5 (13) |
6
Tackling climate change by reducing carbon dioxide and other greenhouse emissions will have major direct health benefits in addition to reducing the risk of climate change, especially in low-income countries, according to ...
Seeking a Smarter Grid: Integrating Wind Energy by Linking Buildings to the Grid
Nov 24, 2009 |
not rated yet |
2
In utility parlance, wind energy is known as a “variable load.” That’s because wind is naturally unpredictable and inconstant. What’s worse, it is more likely to blow at night, when demand for electricity ...
Selling chip makers on optical computing
Nov 24, 2009 |
4.6 / 5 (11) |
1
(PhysOrg.com) -- Computer chips that transmit data with light instead of electricity consume much less power than conventional chips, but so far, they've remained laboratory curiosities. Professors Vladimir ...
NREL Uncovers Clean Energy Leaders State by State
Nov 24, 2009 |
3.4 / 5 (5) |
2
(PhysOrg.com) -- That California and Texas still lead the United States in generating renewable energy probably is no surprise. But, NREL's 2009 State of the States report shows that several smaller states ...
Small optical force can budge nanoscale objects
Nov 17, 2009 |
4.8 / 5 (13) |
0
(PhysOrg.com) -- Engineering researchers have used a very tiny beam of light with as little as 1 milliwatt of power to move a silicon structure up to 12 nanometers.
Ultra-Long Carbon Nanotubes Could Serve as Future Transmission Lines
Nanotechnology / Nanomaterials
Nov 10, 2009 |
4.9 / 5 (27) |
15
(PhysOrg.com) -- When it comes to carbon nanotubes, the majority of research so far has focused on small-scale applications. But now, a team of researchers from Rice University has created carbon nanotubes ...
Tesla Roadster Goes 313 Miles on a Single Charge
Nov 09, 2009 |
4.4 / 5 (14) |
2
(PhysOrg.com) -- Tesla is becoming synonymous with high performance electric cars. Indeed, the Tesla car company has been making efforts to create a brand of sports car that runs on electricity, and does so ...
New 'smart' electrical meters raise privacy issues
Nov 06, 2009 |
4.3 / 5 (11) |
13
The new "smart meters" utilities are installing in homes around the world to reduce energy use raise fresh privacy issues because of the wealth of information about consumer habits they reveal, experts said ...
Solar power generation around the clock
Nov 05, 2009 |
4.6 / 5 (29) |
15
(PhysOrg.com) -- A Californian company, SolarReserve, is developing a solar power system that can store seven hours' worth of solar energy by focusing mirrors onto millions of gallons of molten salt, allowing ...
Toward home-brewed electricity with 'personalized solar energy'
Nov 04, 2009 |
3.4 / 5 (10) |
5
New scientific discoveries are moving society toward the era of "personalized solar energy," in which the focus of electricity production shifts from huge central generating stations to individuals in their ...
Funding A Greener Grid: How Obama plans to spend billions on modernizing the U.S. electrical network
Oct 29, 2009 |
not rated yet |
1
President Barack Obama announced on Tuesday that his administration plans to spend $3.4 billion on producing a safer, more efficient electrical grid. Obama underscored the need to find clean forms of energ ...
Plugging into an electric vehicle revolution
Oct 27, 2009 |
5 / 5 (1) |
0
A road trial of plug-in hybrid electric vehicles (PHEVs), which could one day end up in every Australian driveway, is underway. Over the next three months, staff from Victorian energy distributor SP AusNet ...
Bad weather delays NASA new rocket test flight
Space & Earth / Space Exploration
Oct 27, 2009 |
not rated yet |
1
(AP) -- NASA tried for hours Tuesday to launch its newest rocket for a shakedown flight, but clouds and high wind kept it stuck on the pad.
Lighter, cheaper, LED light bulbs are starting to enter the marketplace
Oct 22, 2009 |
3.8 / 5 (13) |
6
Just when you were finally warming up to the idea of swapping out your old light bulbs with compact fluorescent ones, you may soon find a new alternative at your local hardware store.
Ultracapacitors Make City Buses Cheaper, Greener
Oct 21, 2009 |
4.5 / 5 (45) |
31
(PhysOrg.com) -- A fleet of 17 buses near Shanghai has been running on ultracapacitors for the past three years, and today that technology is coming to the Washington, DC, for a one-day demonstration. Chinese ...
