Search results for Brownian motion

Earth Sciences Feb 24, 2011

Scientists say ocean currents cause microbes to filter light

(PhysOrg.com) -- Adding particles to liquids to make currents visible is a common practice in the study of fluid mechanics, one that was adopted and perfected by artist Paul Matisse in sculptures he calls Kalliroscopes. Matisse’s ...

General Physics Feb 2, 2011

Tiny heat engine may be world's smallest

(PhysOrg.com) -- Steam engines, combustion engines, and diesel engines are all different types of heat engines, which operate by converting heat energy into mechanical work. Although heat engines have existed for a long time, ...

General Physics Jan 25, 2011

Dynamic systems in living cells break the rules

There is considerable interest in understanding transport and information pathways in living cells. It is crucial for both the transport of, for example, medicine into cells, the regulation of cell life processes and their ...

Nanophysics Jan 19, 2011

Secrets of mysterious metal hotspots uncovered by new single molecule imaging technique

The secrets behind the mysterious nano-sized electromagnetic "hotspots" that appear on metal surfaces under a light are finally being revealed with the help of a BEAST. Researchers at the DOE's Lawrence Berkeley National ...

Mathematics Jan 19, 2011

Norbert Wiener's earlier work may prove more important

Norbert Wiener, the mathematician and former child prodigy who won the National Medal of Science in 1963, figures prominently in MIT lore. After entering Tufts University at 11 and getting his PhD from Harvard at 18, he joined ...

Nanomaterials Jan 6, 2011

Researchers settle argument over mobility of flexible filaments (w/ Video)

(PhysOrg.com) -- Theo Odijk, you win. The professor of biotechnology at Delft University of Technology in the Netherlands has a new best friend in Rice University's Matteo Pasquali.

Cell & Microbiology Oct 12, 2010

Cellular traffic: Modeling shows that factors beyond crowding affect how molecules interact within cells

(PhysOrg.com) -- Using large-scale computer simulations, researchers at the Georgia Institute of Technology have identified the most important factors affecting how molecules move through the crowded environment inside living ...

General Physics Sep 8, 2010

The dance of hot nanoparticles

(PhysOrg.com) -- "Brownian motion is a very old concept," Klaus Kroy tells PhysOrg.com. "The laws explaining it were formulated more than a century ago by Albert Einstein. However, we are finding some interesting divergences ...

Biochemistry Aug 24, 2010

Visualizing viruses: new research pinpoints tiny invaders

In the war against infectious disease, identifying the culprit is half the battle. Now, research professor Shaopeng Wang and his colleagues from the Biodesign Institute at Arizona State University, describe a new method for ...

Mathematics Jun 29, 2010

Stirring the ocean: Calculating the role of the oceans' swimmers

(PhysOrg.com) -- The world's oceans, we know, are constantly shaken and stirred by the winds and the tides and other physical forces of nature. But what about fish and other swimming marine life? Do they stir the ocean, too?

page 25 from 30