News tagged with perturbations
The older we get, the less we know (cosmologically)
(Phys.org) -- The universe is a marvelously complex place, filled with galaxies and larger-scale structures that have evolved over its 13.7-billion-year history. Those began as small perturbations of matter ...
May 22, 2012 |
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Tracking a Jurassic reversal of the Earth's magnetic field
Roughly 180 million years ago, during the height of the Jurassic period, the Earth's magnetic field flipped, bringing the magnetic north pole once again into the Northern Hemisphere.
Space & Earth / Earth Sciences
May 17, 2012 |
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The new world of gamma-ray optics
Scientists discover that certain materials like silicon or gold exhibit a surprisingly large refractive index for extremely high energetic gamma-rays.
May 14, 2012 |
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Researchers reveal unseen planet by its gravity
More than a 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus. In a ...
May 10, 2012 |
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Ultrafast laser pulses shed light on elusive superconducting mechanism
An international team that includes University of British Columbia physicists has used ultra-fast laser pulses to identify the microscopic interactions that drive high-temperature superconductivity.
Mar 29, 2012 |
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Transverse instability of megaripples
Aeolian ripples, which form regular patterns on sand beaches and desert floors, indicate the fundamental instability of flat sand surfaces under the wind-induced transport of sand grains.
Space & Earth / Earth Sciences
Mar 20, 2012 |
5 / 5 (1) |
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How to build doughnuts with Lego blocks
Scientists have uncovered how nature minimises energy costs in rings of liquids with an internal nanostructure made of two chemically discordant polymers joined with strong bonds, or di-blocks, deposited on ...
Dec 21, 2011 |
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Butterfly wings inspire design of water-repellent surface
Researchers mimic the many-layered nanostructure of blue mountain swallowtail wings to make a silicon wafer that traps both air and light.
Nanotechnology / Nanomaterials
Nov 21, 2011 |
5 / 5 (2) |
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Rethinking equilibrium: In nature, large energy fluctuations may rile even 'relaxed' systems
An international research team led by the University at Buffalo has shown that large energy fluctuations can rile even a "relaxed" system, raising questions about how energy might travel through structures ranging from the ...
Oct 31, 2011 |
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ESA To Collaborate with NASA on Solar Science Mission
On October 4, 2011, the European Space Agency announced it's two next science missions, including Solar Orbiter, a spacecraft geared to study the powerful influence of the sun. Solar Orbiter will be an ESA-led ...
Space & Earth / Space Exploration
Oct 06, 2011 |
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Research outlines math framework that could help convert 'junk' energy into useful power
A University at Buffalo-led research team has developed a mathematical framework that could one day form the basis of technologies that turn road vibrations, airport runway noise and other "junk" energy into ...
Jul 20, 2011 |
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Understanding behavioral patterns: Why bird flocks move in unison
Animal flocks, be it honeybees, fish, ants or birds, often move in surprising synchronicity and seemingly make unanimous decisions at a moment's notice, a phenomenon which has remained puzzling to many researchers.
Sep 15, 2010 |
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Physicists investigate fate of five-dimensional black strings
(PhysOrg.com) -- While black holes in four-dimensional space-time are stable and can persist for a long time, their higher-dimensional analogues are usually unstable. One such theoretical analogue is a five-dimensional ...
Sep 10, 2010 |
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Cancer-metabolism link runs deep in humans
Eighty years ago, the medical establishment believed cancer was caused by a dysfunction of metabolism, but the idea went out of vogue. Now, scientists are again looking at metabolism and its role in cancer and other common ...
Jul 21, 2010 |
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Bizarre matter could find use in quantum computers: Odd electron mix has fault-tolerant quantum registry
There are enticing new findings this week in the worldwide search for materials that support fault-tolerant quantum computing. New results from Rice University and Princeton University indicate that a bizarre ...
Apr 21, 2010 |
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Perturbation
Perturbation or perturb may refer to any of numerous concepts in several fields:
For more information about Perturbation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
