News tagged with electromagnetic fields
A magnetic approach to lattices
(Phys.org) -- JQI experimentalists under the direction of Ian Spielman are in the business of using lasers to create novel environments for neutral atoms. For instance, this research group previously enticed ...
May 22, 2012 |
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Measuring magnetic fields
(Phys.org) -- Polarized light is a familiar phenomenon, as people who prefer polarized sunglasses can testify. The electric field in a beam of light can vibrate either left-right or up-down, and the scattering ...
Apr 09, 2012 |
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Nasa sees fields of green spring up in Saudi Arabia
(PhysOrg.com) -- Saudi Arabia is drilling for a resource possibly more precious than oil.
Space & Earth / Earth Sciences
Mar 30, 2012 |
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Artificially structured metamaterials may boost wireless power transfer
Scientists calculate that a "perfect lens," a slab of artificial material engineered to focus electromagnetic fields in ways that natural materials can't, may increase the efficiency of some wireless power transfer systems.
Mar 13, 2012 |
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Exotic material boosts electromagnetism safely
Using exotic man-made materials, scientists from Duke University and Boston College believe they can greatly enhance the forces of electromagnetism (EM), one of the four fundamental forces of nature, without ...
Feb 29, 2012 |
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'Dark plasmons' transmit energy
Microscopic channels of gold nanoparticles have the ability to transmit electromagnetic energy that starts as light and propagates via "dark plasmons," according to researchers at Rice University.
Feb 09, 2012 |
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A galactic magnetic field in a lab bolsters astrophysical theory
Why is the universe magnetized? It's a question scientists have been asking for decades. Now, an international team of researchers including a University of Michigan professor have demonstrated that it could ...
Jan 25, 2012 |
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Solar power development in US Southwest could threaten wildlife
Government agencies are considering scores of applications to develop utility-scale solar power installations in the desert Southwest of the United States, but too little is known to judge their likely effects on wildlife, ...
Dec 09, 2011 |
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Millisecond pulsar in spin mode
Astronomers have tracked down the first gamma-ray pulsar in a globular cluster of stars. It is around 27,000 light years away and thus also holds the distance record in this class of objects. Moreover, its ...
Nov 03, 2011 |
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Suspects in the quenching of star formation exonerated
Supermassive black holes millions to billions times the mass of our Sun lie at the heart of most, maybe all large galaxies. Some of these power brilliantly luminous, rapidly growing objects called active galactic nuclei that ...
Oct 11, 2011 |
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Worry, resignation on potential cellphone cancer link
A World Health Organization warning of increased brain cancer risk for cellular phone users had many Americans alarmed Wednesday but resigned to needing the devices to do their jobs. ...
Jun 01, 2011 |
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Industry disputes report on cell phone cancer link
A global wireless industry group Thursday disputed the significance of a report released by a UN health organization citing a potential cancer link from use of mobile phones. ...
May 31, 2011 |
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Cell phones may be contributing to the honeybee population decline
(PhysOrg.com) -- In a new study published in Apidologie, Lausanne researcher and bee specialist Daniel Favre shares his findings of cell phones electromagnetic fields and their effects on the honeybee popula ...
May 18, 2011 |
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When the speed of light depends on its direction
Light does not travel at the same speed in all directions under the effect of an electromagnetic field. Although predicted by theory, this counter-intuitive effect has for the first time been demonstrated ...
May 13, 2011 |
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Physicists move closer to efficient single-photon sources
A team of physicists in the United Kingdom has taken a giant step toward realizing efficient single-photon sources, which are expected to enable much-coveted completely secure optical communications, also known as "quantum ...
Mar 16, 2011 |
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