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- From: "Stephen Sadler" <Docshiva@Docshiva.org>
- To: "'North American Fruit Explorers'" <nafex@lists.ibiblio.org>
- Subject: Re: [NAFEX] nafex Digest, Vol 51, Issue 71
- Date: Wed, 18 Apr 2007 21:42:55 -0700
The program was a Nova episode called “Magnetic
Storm”. The poles reverse every quarter million years or so on
average, but not with regularity. It’s been 700,000-800,000 since
the last one. Over the last century the field has weakened, and, should
it continue weakening at the same rate, it would reach a switchable state
sometime near 2550. But this may not be a continuous trend, but rather a
wave in an irregular cycle. Right now, the field is as strong as it’s
been in 50,000 years; and although it has been weaker in the last
three-quarter-million-years, it’s maintained its polar alignment. ~ Stephen From:
nafex-bounces@lists.ibiblio.org [mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of Lon J. Rombough At present, the earth's
magnetic poles are in the process of reversing, which is causing the magnetic
fields to be irregular and to break up. There was a very good program on public
television not too long ago that explained it, and how it's a regular event
every few thousand years. |
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Re: [NAFEX] nafex Digest, Vol 51, Issue 71,
Pete, 04/18/2007
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Re: [NAFEX] nafex Digest, Vol 51, Issue 71,
Lon J. Rombough, 04/18/2007
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Re: [NAFEX] nafex Digest, Vol 51, Issue 71,
Lon J. Rombough, 04/18/2007
- [NAFEX] off topic, planetary magnetic field, NASA article link, Stephen Sadler, 04/19/2007
- Re: [NAFEX] nafex Digest, Vol 51, Issue 71, Stephen Sadler, 04/19/2007
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Re: [NAFEX] nafex Digest, Vol 51, Issue 71,
Lon J. Rombough, 04/18/2007
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Re: [NAFEX] nafex Digest, Vol 51, Issue 71,
Lon J. Rombough, 04/18/2007
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