News tagged with diffusion
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 ...
May 15, 2012 |
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Harnessing natural light, indoors
(Phys.org) -- Using the most recent generation windows, architects and lighting designers can to control daylight, directing it where they want within a room. An EPFL laboratory has developed a simulation ...
May 08, 2012 |
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Whether tweets live or die depends more on network, competition for attention than message or user influence
On the global social media stage, it's not so much the message but rather network structure and competition for attention that determine whether a meme becomes popular and shows staying power or whether it ...
Apr 03, 2012 |
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A study describes liquid water diffusion at molecular level
An article published in Physical Review E and conducted by Spanish researchers at the universities of Granada and Barcelona might lead to a revolutionary change in water desalination and filtration methods.
Feb 24, 2012 |
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Nanorod-assembled order affects diffusion rate and direction
Some of the recent advancements in nanotechnology depend critically on how nanoparticles move and diffuse on a surface or in a fluid under non-ideal to extreme conditions. Georgia Tech has a team of researchers ...
Nanotechnology / Bio & Medicine
Feb 06, 2012 |
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A pocket of star formation
(PhysOrg.com) -- This new view shows a stellar nursery called NGC 3324. It was taken using the Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile. The intense ultraviolet ...
Feb 01, 2012 |
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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.
Jan 23, 2012 |
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FLEX-ible insight into flame behavior
(PhysOrg.com) -- Whether free-burning or smoldering, uncontrolled fire can threaten life and destroy property. On Earth, a little water, maybe some chemicals, and the fire is smothered.
Space & Earth / Space Exploration
Nov 30, 2011 |
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Researchers ink nanostructures with tiny 'soldering iron'
Researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) have shed light on the role of temperature in controlling a fabrication technique for drawing chemical patterns as small as 20 nanometers. ...
Nov 07, 2011 |
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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.
Nov 02, 2011 |
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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 ...
Nov 02, 2011 |
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Physicists take inspiration from spilled milk
(PhysOrg.com) -- Two Lehigh physicists have developed an imaging technique that makes it possible to directly observe light-emitting excitons as they diffuse in a new material that is being explored for its ...
Aug 12, 2011 |
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Scientists investigate an innovative protein family in plants
A team of European researchers has succeeded in revealing how a family of proteins work, which until now remained a mystery, according to a new study published in the journal Nature.
May 26, 2011 |
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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 ...
May 16, 2011 |
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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
Apr 20, 2011 |
4.7 / 5 (7) |
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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.
