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Old 10-18-2010, 09:33 PM
 
Location: Sarasota, Florida
15,395 posts, read 22,517,133 times
Reputation: 11134

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The Earth's Magnetic Field is most likely a result of the Dynamo Theory where our Liquid Iron Core is rotating and generating a Magnetic Dipole.

This in turn protects us from the Solar Wind and Solar Storms by deflecting the majority of highly energizied particles away from the planet and it's atmosphere.

Without this force shield our atmosphere would most likely be stripped away and our planet's surface would be bombarded by radiation; rendering life unlikely to develop and evolve.

Apparently this is one of the major reasons(no real magnetic field) that Mars has lost it's atmosphere and consequently it's chance of nurturing more complex lifeforms and/or any life at all.

Magnetic Field Reversals have occured throughout Earth's existence and we are overdue for another. There is a possibility that as this occurs we will have NO magnetic shield and radiation will adversely affect all life until the field flips and is reestablished.

Earth's magnetic field - Wikipedia, the free encyclopedia

Dynamo theory - Wikipedia, the free encyclopedia

Magnetosphere - Wikipedia, the free encyclopedia

Solar wind - Wikipedia, the free encyclopedia

Dipole - Wikipedia, the free encyclopedia

Geomagnetic reversal - Wikipedia, the free encyclopedia


http://www.youtube.com/watch?v=O-V3yR2RZUE


http://www.youtube.com/watch?v=9tfLA...eature=related


http://www.youtube.com/watch?v=lxWBlJ1kB7Q


http://www.youtube.com/watch?v=lPLjnqS8UeY


http://www.youtube.com/watch?v=nVqWH5Qlg8Y
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Old 10-18-2010, 10:53 PM
 
Location: Sarasota, Florida
15,395 posts, read 22,517,133 times
Reputation: 11134

http://www.youtube.com/watch?v=2uIyUOAC1kU


http://www.youtube.com/watch?v=pP88J_nzanE
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Old 10-19-2010, 10:56 AM
 
23,590 posts, read 70,367,145 times
Reputation: 49221
IIRC, the flip is almost instantaneous on a geologic scale. Tracking of the magnetic pole and rotational pole have been done for a surprisingly long time. I was astounded, while reading some old Pop Mechanics, to find that the wandering of the rotational pole was fully documented back in the 1920s.
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Old 10-20-2010, 05:52 PM
 
Location: Sarasota, Florida
15,395 posts, read 22,517,133 times
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On a Geological scale....I concur; however even a few years without the Magnetic Field could wreak havoc for life on Earth....beginning with increasing cancer rates and depending how long we went unprotected...far worse consequences. For example a severe solar storm without our shield could devastate all electronic equipment planet wide. I also wonder if any correlations have been researched between approximate flip dates and species extinction events? Have you seen any research on this "theory"????

I too am surprised how complete the data is for flips and approximate dates(but it is easy to "read" in the Geologic Record) yet still concerned that we essentially have no good theory as to why the flip occurs or how it occurs...is it relative a sudden on/off flip OR a slow and gradual failing of the magnetic field with a subsequent flip and slow reintensification of the Magnetic Field.


http://www.youtube.com/watch?v=QIr6nfwpctA


http://www.youtube.com/watch?v=22H0i...eature=related


http://www.youtube.com/watch?v=HBYGP...eature=related


http://www.youtube.com/watch?v=SRI34...eature=related


http://www.youtube.com/watch?v=01EdX...eature=related

I post the videos to give an idea of how bad it could theoritically get with a severe solar storm; now imagine what would transpire without our protective magnetic field in place.
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Old 10-21-2010, 03:07 PM
 
5,150 posts, read 7,761,033 times
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I think maybe the core might be more like the Enterprise deflector dish instead of a "Force Shield".

Not sure though. I failed warp dynamics.
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Old 10-22-2010, 08:49 PM
 
Location: Sarasota, Florida
15,395 posts, read 22,517,133 times
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ROFL......The core is essentially a Dynamo which eminates an electromagnetic field which surrounds the Earth; essentially the same as the (theoritical)Force Shields on the Enterprise. The Deflector Shields theoritically were a repulsive Force similar to antigravity so I fail to see your logic.

You do realize that the warping of spacetime is theoritically possible and not a far fetched idea.....it is rooted in real science according to Einstein!

Dynamo - Wikipedia, the free encyclopedia

Force field - Wikipedia, the free encyclopedia

Navigational deflector - Memory Beta, non-canon Star Trek Wiki

Spacetime - Wikipedia, the free encyclopedia

File:Spacetime curvature.png - Wikipedia, the free encyclopedia

http://en.wikipedia.org/wiki/Warp_drive_(Star_Trek)

Here are the Warp Drive Mathematics worked out by a prominent Physicist!
Alcubierre drive - Wikipedia, the free encyclopedia

Faster-than-light - Wikipedia, the free encyclopedia

Miguel Alcubierre - Wikipedia, the free encyclopedia
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Old 10-22-2010, 11:35 PM
 
5,150 posts, read 7,761,033 times
Reputation: 1443
Quote:
Originally Posted by PITTSTON2SARASOTA View Post
ROFL......The core is essentially a Dynamo which eminates an electromagnetic field which surrounds the Earth; essentially the same as the (theoritical)Force Shields on the Enterprise. The Deflector Shields theoritically were a repulsive Force similar to antigravity so I fail to see your logic.

You do realize that the warping of spacetime is theoritically possible and not a far fetched idea.....it is rooted in real science according to Einstein!
I have no recollection of this timeline.
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Old 12-02-2010, 11:03 AM
 
Location: Sarasota, Florida
15,395 posts, read 22,517,133 times
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Apparently NASA is now preparing for the day when a solar storm overwhelms our magnetosphere and disrupts/disables our power and communication systems as well as causing other problems>>>>>

NASA Solar Shield

NASA’s Solar Shield to mitigate damage to power grid from severe solar storms

solar shield

overview

Solar Shield--Protecting the North American Power Grid - NASA Science
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Old 12-11-2012, 07:50 PM
 
Location: Sarasota, Florida
15,395 posts, read 22,517,133 times
Reputation: 11134
Earth: Magnetic Field and Magnetosphere

Earth's Magnetosphere : Image of the Day

NASA - The Earth's Magnetosphere

Earth’s Magnetic Field

The Earth's Magnetic Field

Cracks in Earth's Magnetic Shield - NASA Science

Earth's Magnetosphere
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