| Author | Message | ||
     Chanakya950 Comedian Username: Chanakya950 Post Number: 1435 Registered: 05-2012 Posted From: 115.252.0.26 Rating: N/A |
bump NAKU NEENE POTI NATO NAKE POTI | ||
| Chanakya950 Comedian Username: Chanakya950 Post Number: 1400 Registered: 05-2012 Posted From: 115.252.0.26 Rating: N/A |
magnetic field valla electrons produce avvatam yenti ra babu gauss cheppinatti oka magnet ni some laksof vibrations/sec vibrate cheste chuttu unna air lo electric charge vastundi mari vaccum lo?????????????? radu ani naa feeling NAKU NEENE POTI NATO NAKE POTI | ||
| Ringo_rangaswamy Comedian Username: Ringo_rangaswamy Post Number: 1593 Registered: 02-2011 Posted From: 69.120.136.97 Rating: N/A |
moses 10 commandments konda meeda kooda vundemo choodandi | ||
| Gandhiguevara Legend Username: Gandhiguevara Post Number: 31548 Registered: 10-2009 Posted From: 74.75.94.8 Rating: N/A |
Chadavalsina panenti? Mana concept manaki theeladhaa. Gaadidha ki gaandrimpu evaranna nerpala? | ||
| Zindagi Junior Artist Username: Zindagi Post Number: 351 Registered: 02-2012 Posted From: 175.143.222.220 Rating: N/A |
chadivava asalu ...  | ||
| Gandhiguevara Legend Username: Gandhiguevara Post Number: 31546 Registered: 10-2009 Posted From: 74.75.94.8 Rating: N/A |
It's absolutely true... | ||
| Okahyderabadi Side Hero Username: Okahyderabadi Post Number: 3745 Registered: 12-2009 Posted From: 108.66.241.90 Rating: N/A |
June 29, 2012: A favorite theme of science fiction is "the portal"--an extraordinary opening in space or time that connects travelers to distant realms. A good portal is a shortcut, a guide, a door into the unknown. If only they actually existed.... It turns out that they do, sort of, and a NASA-funded researcher at the University of Iowa has figured out how to find them. "We call them X-points or electron diffusion regions," explains plasma physicist Jack Scudder of the University of Iowa. "They're places where the magnetic field of Earth connects to the magnetic field of the Sun, creating an uninterrupted path leading from our own planet to the sun's atmosphere 93 million miles away. Observations by NASA's THEMIS spacecraft and Europe's Cluster probes suggest that these magnetic portals open and close dozens of times each day. They're typically located a few tens of thousands of kilometers from Earth where the geomagnetic field meets the onrushing solar wind. Most portals are small and short-lived; others are yawning, vast, and sustained. Tons of energetic particles can flow through the openings, heating Earth's upper atmosphere, sparking geomagnetic storms, and igniting bright polar auroras. NASA is planning a mission called "MMS," short for Magnetospheric Multiscale Mission, due to launch in 2014, to study the phenomenon. Bristling with energetic particle detectors and magnetic sensors, the four spacecraft of MMS will spread out in Earth's magnetosphere and surround the portals to observe how they work. Just one problem: Finding them. Magnetic portals are invisible, unstable, and elusive. They open and close without warning "and there are no signposts to guide us in," notes Scudder. Hidden Portals (Polar data, 200px) Data from NASA's Polar spacecraft, circa 1998, provided crucial clues to finding magnetic X-points. Actually, there are signposts, and Scudder has found them, Portals form via the process of magnetic reconnection. Mingling lines of magnetic force from the sun and Earth criss-cross and join to create the openings. "X-points" are where the criss-cross takes place. The sudden joining of magnetic fields can propel jets of charged particles from the X-point, creating an "electron diffusion region." To learn how to pinpoint these events, Scudder looked at data from a space probe that orbited Earth more than 10 years ago. "In the late 1990s, NASA's Polar spacecraft spent years in Earth's magnetosphere," explains Scudder, "and it encountered many X-points during its mission." Because Polar carried sensors similar to those of MMS, Scudder decided to see how an X-point looked to Polar. "Using Polar data, we have found five simple combinations of magnetic field and energetic particle measurements that tell us when we've come across an X-point or an electron diffusion region. A single spacecraft, properly instrumented, can make these measurements." This means that single member of the MMS constellation using the diagnostics can find a portal and alert other members of the constellation. Mission planners long thought that MMS might have to spend a year or so learning to find portals before it could study them. Scudder's work short cuts the process, allowing MMS to get to work without delay. It's a shortcut worthy of the best portals of fiction, only this time the portals are real. And with the new "signposts" we know how to find them. The work of Scudder and colleagues is described in complete detail in the June 1 issue of the Physical Review Letters. source http://science.nasa.gov/science-news/science-at-nasa/2012/29 jun_hiddenportals/ In history there is no such thing as the last word on any subject research leads to new things every day |
