News tagged with perturbations
Physicists Calculate Number of Parallel Universes
Oct 16, 2009 |
3.1 / 5 (77) |
58
(PhysOrg.com) -- Over the past few decades, the idea that our universe could be one of many alternate universes within a giant multiverse has grown from a sci-fi fantasy into a legitimate theoretical possibility. ...
ESA designs its smallest ever space engine to push back against sunshine
Space & Earth / Space Exploration
Mar 10, 2009 |
4.9 / 5 (9) |
4
(PhysOrg.com) -- This month an ESA team is preparing to test the performance of the smallest yet most precisely controllable engine ever built for space, sensitive enough to counteract the force of incoming ...
Search results for perturbations
Cosmologists aim to observe first moments of universe
Feb 16, 2009 |
4.3 / 5 (6) |
4
During the next decade, a delicate measurement of primordial light could reveal convincing evidence for the popular cosmic inflation theory, which proposes that a random, microscopic density fluctuation in ...
String Theory Gets a Boost
Jan 29, 2008 |
4 / 5 (110) |
2
Among the scientific theories that excite a great deal of controversy are those theories that deal with strings. And the idea of cosmic strings gets as much play as any in scientific circles.
Mass extinctions and the marine record
Space & Earth / Earth Sciences
Jul 30, 2007 |
3.5 / 5 (13) |
0
Mass extinctions have long captured the imagination of scientists and non-scientists alike. A new volume published by the Geological Society of America includes some of the best evidence of the relationship between major ...
Scientists propose test of string theory based on neutral hydrogen absorption
Jan 28, 2008 |
4.5 / 5 (34) |
3
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 ...
Genes that control embryonic stem cell fate identified
Biology /
Jul 10, 2008 |
5 / 5 (6) |
0
Scientists have identified about two dozen genes that control embryonic stem cell fate. The genes may either prod or restrain stem cells from drifting into a kind of limbo, they suspect. The limbo lies between the embryonic ...
Evolution and the workaround
Dec 10, 2006 |
4 / 5 (7) |
0
Living things are resourceful, which is a comforting thought unless the living thing in question is a pathogen or a cancer cell. Noxious cells excel at developing drug resistance, outwitting immune systems, and evading cellular ...
Fluid Particles Irreversible in Some Circumstances, Physicists Report in Nature
Physics /
Dec 14, 2005 |
4.4 / 5 (7) |
0
When a viscous fluid, such as a jar of honey, is stirred and then unstirred, the contents return to their starting points. However, according to research by a team of physicists headed by New York University’s David Pine, ...
E-Textile Pants Identify Fall-Prone Elderly
Jul 30, 2008 |
4.7 / 5 (18) |
0
(PhysOrg.com) -- A pair of pants may help determine if elderly individuals have a high risk of slipping and falling by sensing fluctuations in their walking gait.
Schizophrenia gene's role may be broader, more potent, than thought
Nov 19, 2009 |
5 / 5 (1) |
0
(PhysOrg.com) -- UCSF scientists studying nerve cells in fruit flies have uncovered a new function for a gene whose human equivalent may play a critical role in schizophrenia.
New focus urged for ecological studies
Jan 18, 2006 |
1 / 5 (2) |
0
A University of Georgia anthropologist is urging more attention be paid to the social science aspects of long-term ecological studies.
List of search results for perturbations
