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News tagged with diffusion

X-ray discovery points to location of missing matter

Using observations with NASA's Chandra X-ray Observatory and ESA's XMM-Newton, astronomers have announced a robust detection of a vast reservoir of intergalactic gas about 400 million light years from Earth. ...

Space & Earth / Astronomy

created May 11, 2010 | popularity 5 / 5 (21) | comments 14 | with audio podcast

Discovery paves way for development of efficient, inexpensive plastic solar cells

Physicists at Rutgers University have discovered new properties in a material that could result in efficient and inexpensive plastic solar cells for pollution-free electricity production.

Nanotechnology / Nanomaterials

created Oct 10, 2010 | popularity 4.7 / 5 (20) | comments 6 | with audio podcast

Making stars: Studies show how cosmic dust and gas shape galaxy evolution

Astronomers find cosmic dust annoying when it blocks their view of the heavens, but without it the universe would be devoid of stars. Cosmic dust is the indispensable ingredient for making stars and for understanding ...

Space & Earth / Astronomy

created Nov 22, 2010 | popularity 5 / 5 (11) | comments 6 | with audio podcast

New space research settles years of scientific debate

(PhysOrg.com) -- New space research published this week (Thursday 21 October) in the journal Nature, has settled decades of scientific debate. Researchers from the University of California (UCLA) and Britis ...

Space & Earth / Space Exploration

created Oct 20, 2010 | popularity 4.7 / 5 (11) | comments 0 | with audio podcast

Earth's crust melts easier than previously thought

A University of Missouri study published in Nature this week has found that the Earth's crust melts easier than previously thought. In the study, researchers measured how well rocks conduct heat at differ ...

Space & Earth / Earth Sciences

created Mar 18, 2009 | popularity 3.6 / 5 (14) | comments 5

Astrophysicists discover new heating source in cosmological structure formation

(Phys.org) -- So far, astrophysicists thought that super-massive black holes can only influence their immediate surroundings. A collaboration of scientists at the Heidelberg Institute for Theoretical Studies ...

Space & Earth / Astronomy

created May 15, 2012 | popularity 4.1 / 5 (11) | comments 8 | with audio podcast

Mysterious stellar absorption lines could illuminate 90-year puzzle

The discovery of 13 diffuse interstellar bands with the longest wavelengths to date could someday solve a 90-year-old mystery.

Space & Earth / Astronomy

created Nov 02, 2011 | popularity 4.9 / 5 (9) | comments 3 | with audio podcast

Solar concentrator increases collection with less loss

(PhysOrg.com) -- Converting sunlight into electricity is not economically attractive because of the high cost of solar cells, but a recent, purely optical approach to improving luminescent solar concentrators ...

Physics / Optics & Photonics

created Nov 02, 2011 | popularity 4.8 / 5 (9) | comments 2 | with audio podcast

Scientists discover first evidence of brain rewiring in children

Carnegie Mellon University scientists Timothy Keller and Marcel Just have uncovered the first evidence that intensive instruction to improve reading skills in young children causes the brain to physically ...

Medicine & Health / Neuroscience

created Dec 09, 2009 | popularity 5 / 5 (8) | comments 0

The Chandra Carina complex project

(PhysOrg.com) -- The Great Nebula in the constellation of Carina is a massive star-forming complex located about 7.5 thousand light-years away. The main star in the complex, Eta Carinae, shines brightly in ...

Space & Earth / Astronomy

created May 16, 2011 | popularity 5 / 5 (7) | comments 1 | with audio podcast

Fighter pilots' brains are 'more sensitive'

(PhysOrg.com) -- Cognitive tests and MRI scans have shown significant differences in the brains of fighter pilots when compared to a control group, according to a new study led by scientists from UCL.

Medicine & Health / Neuroscience

created Dec 14, 2010 | popularity 3.8 / 5 (9) | comments 13 | with audio podcast

Diffused light control can project in fully lit room

(PhysOrg.com) -- Researchers at the Uchida Research Laboratory at Tohoku University, have created a high visibility projector screen that works on the principle of Diffused Light Control (DLC). The long and ...

Technology / Hi Tech & Innovation

created Apr 20, 2011 | popularity 4.7 / 5 (7) | comments 3 | with audio podcast weblog

Researcher devises new solar pond distillation system

Ecosystems of terminus lakes around the world could benefit from a new system being developed at the University of Nevada, Reno to desalinate water using a specialized low-cost solar pond and patented membrane ...

Technology / Energy & Green Tech

created Jan 05, 2010 | popularity 3.9 / 5 (8) | comments 2 | with audio podcast

Researchers boost solar concentrator efficiency

A team of researchers at the University of California, Merced, has redesigned luminescent solar concentrators to be more efficient at sending sunlight to solar cells.

Physics / Optics & Photonics

created Jan 23, 2012 | popularity 4.4 / 5 (7) | comments 5 | with audio podcast

Faulty 'wiring' in the brain triggers onset of schizophrenia

A new study by researchers at the Institute of Psychiatry (IoP), King's College London has discovered abnormalities in the white matter of the brain that seem to be critical for the timing of schizophrenia. The study, led ...

Medicine & Health / Psychology & Psychiatry

created Oct 26, 2009 | popularity 5 / 5 (6) | comments 0

Diffusion

Diffusion describes the spread of particles through random motion from regions of higher concentration to regions of lower concentration. The time dependence of the statistical distribution in space is given by the diffusion equation. The concept of diffusion is tied to that of mass transfer driven by a concentration gradient. Diffusion is invoked in the social sciences to describe the spread of ideas.

For more information about Diffusion, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.