Daily non-political popular news in brief.
Penn physicists track the random walks of ellipsoids, test 'lost' theory of Brownian motion
10-26-2006 · EurekAlert!Research carried out at the University of Pennsylvania has definitively measured and described the Brownian motion of an isolated ellipsoidal particle, completing a path laid out by Einstein 100 years ago when he first described rotational Brownian motion for spheres in water. The findings of the Penn group rediscovered ideas about rotational-translational coupling first published by French physicist Francis Perrin in the 1930s, ideas that were apparently "forgotten" by the science community.
Read more »
Keywords: penn, physicists, track, random, walks, ellipsoids, test, lost, theory, brownian, motion, physicist, walk, ellipsoid
« Previous | Next »
Similar news on "Penn physicists track the random walks of ellipsoids, test 'lost' theory of Brownian motion":
- Landmark modeling study at Penn reveals how ferroelectric computer memory works
10-10-2007 · EurekAlert!
A collaboration of University of Pennsylvania chemists and engineers has performed multiscale modeling of ferroelectric domain walls and provided a new theory of behavior for domain-wall motion, the "sliding wall" that separates ferroelectric domains and makes high-density ferroelectric RAM possible.
Similar news · Read more »
- Theoretical physicists develop test for string theory
01-24-2007 · EurekAlert!
For decades, many scientists have criticized string theory, pointing out that it does not make predictions by which it can be tested. Now, researchers at Carnegie Mellon University; the University of California, San Diego; and The University of Texas at Austin have developed a test of string theory. Their test, described in the January 26 Physical Review Letters, involves measurements of how elusive high-energy particles scatter during particle collisions.
Similar news · Read more »
- Clemson scientists shed light on molecules in living cells
08-21-2007 · EurekAlert!
Clemson University chemists have developed a method to dramatically improve the longevity of fluorescent nanoparticles that may someday help researchers track the motion of a single molecule as it travels through a living cell. The chemists are exploiting a process called "resonance energy transfer."
Similar news · Read more »
- Scientists propose test of string theory based on neutral hydrogen absorption
01-28-2008 · EurekAlert!
Ancient light absorbed by neutral hydrogen atoms could be used to test certain predictions of string theory, say cosmologists at the University of Illinois. Making the measurements, however, would require a gigantic array of radio telescopes to be built on Earth, in space or on the moon.
Similar news · Read more »
- Stephen Musolino Named a Fellow of the Health Physics Society
12-07-2007 · Brookhaven National Laboratory
Stephen Musolino, a certified health physicist at Brookhaven, has been elected a Fellow of the Health Physics Society (HPS). HPS Fellows are senior members of the society who have made significant administrative, educational, and /or scientific contributions to the profession of health physics. Health physicists are specialists in radiation protection.
Similar news · Read more »
- Princeton physicists connect string theory with established physics
05-02-2007 · EurekAlert!
String theory, simultaneously one of the most promising and controversial ideas in modern physics, may be more capable of helping probe the inner workings of subatomic particles than was previously thought, according to a team of Princeton University scientists.
Similar news · Read more »
- 'Cooper pairs' can be found in insulators as well superconductors
11-22-2007 · EurekAlert!
Fifty years ago, three physicists unveiled their BCS theory of superconductivity, which explained how currents of electrons can flow perpetually if they join in pairs. Those physicists, including Leon Cooper at Brown University, won a Nobel Prize for their work. Now Brown physicists have shown something surprising: the formation of Cooper pairs can not only help electric current to flow but it can also block that current. Their research appears in Science.
Similar news · Read more »
- COUPP experiment tightens limits on dark matter
02-14-2008 · EurekAlert!
Scientists working on the COUPP experiment at DOE's Fermilab today announced a new development in the quest to observe dark matter. The experiment tightened constraints on "spin-dependent" properties of WIMPS, particles that are candidates for dark matter. Their results, combined with the findings of other dark matter searches, contradict the claims for the observation of such particles by the DAMA experiment and further restrict the hunting ground for physicists to track their dark matter quarry.
Similar news · Read more »
- Trotting with emus to walk with dinosaurs
10-24-2006 · EurekAlert!
One way to make sense of 165-million-year-old dino tracks may be to hang out with emus, say paleontologists studying thousands of dinosaur footprints at the Red Gulch Dinosaur Tracksite in northern Wyoming. Because they are about the same size, walk on two legs and have similar feet, emus turn out to be the best modern version of the enigmatic reptiles that once trotted along a long-lost coastline in the Middle Jurassic.
Similar news · Read more »
- Researchers catch motion of a single electron on video
06-06-2007 · EurekAlert!
Using pulses of high-intensity sound, two Brown University physicists have succeeded in making a movie showing the motion of a single electron. Humphrey Maris, a physics professor at Brown University, and Wei Guo, a Brown doctoral student, were able to film the electron as it moved through a container of superfluid helium.
Similar news · Read more »
