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Longest Eclipse Of Century (To Prove Gravity Anomaly)

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Longest Eclipse Of Century (To Prove Gravity Anomaly)

Post  Manahuna on 20.07.09 18:33



19 July 2009 by Phil McKenna

From remote observatories on the Tibetan plateau to a cave in a Shanghai suburb, Chinese researchers are poised to conduct an audacious once-in-a-century experiment. The plan is to test a controversial theory: the possibility that gravity drops slightly during a total eclipse.

Geophysicists from the Chinese Academy of Sciences are preparing an unprecedented array of highly sensitive instruments at six sites across the country to take gravity readings during the total eclipse due to pass over southern China on 22 July. The results, which will be analysed in the coming months, could confirm once and for all that anomalous fluctuations observed during past eclipses are real.

"It sounds like what is really necessary to break the uncertainty," says Chris Duif of Delft University of Technology in The Netherlands. "I'm not really convinced the anomaly exists, but it would be revolutionary if it turned out to be true," he says.

Pendulum anomaly
The first sign that gravity fluctuates during an eclipse was in 1954. French economist and physicist Maurice Allais noticed erratic behaviour in a swinging pendulum when an eclipse passed over Paris.

Pendulums typically swing back and forth as a result of gravity and the rotation of the Earth. At the start of the eclipse, however, the pendulum's swing direction shifted violently (see diagram), suggesting a sudden change in gravitational pull.

Fluctuations have since been measured during around 20 total solar eclipses, but the results still remain inconclusive.

Relative doubt
Most physicists doubt the anomaly's existence, because it would challenge our ideas about how gravity works.

As a result, a number of conventional explanations have been suggested. "There could be different reasons: atmospheric changes in temperature or air pressure, people suddenly moving or not moving, or other sudden changes," says C. S. Unnikrishnan of Tata Institute of Fundamental Research in Mumbai, India.

However, in 2004, Duif posted a theory online concluding that none of the suggested external factors could account for the magnitude and timing of observed anomalies (see www.arxiv.org/abs/0408023).

Best chance
In the run up to July's eclipse, Chinese researchers have prepared eight gravimeters and two pendulums spread across six monitoring sites. The team hopes that the vast distance between the sites (roughly 3000 kilometres (1864 miles) between the most easterly and westerly stations), as well as the number and diversity of instruments used, will eliminate the chance of instrument error or local atmospheric disturbances.

"If our equipment operates correctly, I believe we have a chance to say the anomaly is true beyond all doubt," says Tang Keyun, a geophysicist at the Chinese Academy of Sciences.

The opportunity won't come again soon. At over five minutes, the event will be the longest total solar eclipse predicted for this century. What's more, the event will occur when the sun is high in the sky; a time when, according to Tang, any potential gravitational anomaly should be greatest.

http://www.newscientist.com/article/dn17481-july-eclipse-is-best-chance-to-look-for-gravity-anomaly.html
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Re: Longest Eclipse Of Century (To Prove Gravity Anomaly)

Post  Manahuna on 22.07.09 15:47



Eclipse of the Century Live Online Tonight

Wired Science

By Alexis Madrigal July 21, 2009

The century’s most dramatic solar eclipse will be visible along a narrow swath of Asia and the Pacific Ocean later today. And, thanks to some University of North Dakota researchers, it’ll be visible on the internet, too. The live webcast begins at 5:15 p.m. Pacific time. Live Broadcast Link

The eclipse will last six minutes and 39 seconds, which is near the theoretical maximum duration for a solar eclipse of seven minutes and 31 seconds. For everyone except Ray Kurzweil and the other singulatarians, this will be the longest eclipse of our lifetimes. The Earth won’t see an eclipse this long until June 13, 2132.



If you’re lucky enough to be near the path of the eclipse, check out our guide to the experience, How to See 93 Million Miles. Or perhaps use it to start planning a trip for next July to the Cook Islands or French Polynesia, where you’ll be able to see the next total solar eclipse on July 11, 2010.

NASA has created the definitive guide to the event’s science, including this excellent tip about the latest in protective eyewear for solar eclipse viewing:

“More recently, solar observers have used floppy disks and compact disks (CDs and CD-ROMs) as protective filters by covering the central openings and looking through the disk media,” write Fred Espenak and Jay Anderson of NASA. “However, the optical quality of the solar image formed by a floppy disk or CD is relatively poor compared to aluminized polyester or welder’s glass.”

We’ll be curating a gallery of eclipse photos from the internet, so if you take some, send them our way: brandon [at] earthlab.net.
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Re: Longest Eclipse Of Century (To Prove Gravity Anomaly)

Post  Manahuna on 22.07.09 15:51

Arrow Does the triple eclipse forewarn anything?

Maybe it does, or maybe it correlates to the tradition of certain (hidden?) rituals held on certain calender dates by certain groups of people for certainly special purposes?

“This earth is part of that sky” – a simple but profound statement from the authors, brought out the fact that we are all part of nature and the way going forward is to understand the role nature plays in our thought, action and lives and to shape our lives and actions to be in sync with nature.

Maybe people will rise above themselfs to realize that only through true unity which is a naturALL birthright must be expressed through themselfs to give the authentic self it's rightous place within existence. There is an ocean of choices to be made by each and everyone of us universally.
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