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James
SFN Regular
USA
754 Posts |
 Posted - 07/21/2003 : 12:55:22 [Permalink]
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quote:
Also of interest in the link above in relation to the sun's magnetic field is that it reversals are very short, only 11-12 years. Hey I learned something today :>
So that explains the sun's sunspot activity cycle. |
We don't know who is right. For all we know, some idjit up in the Pacific Northwest mountains who worships a blue jackalope that's 49.25 meters tall every three days in his backyard is the only person who is right. We'll all find out when we die. |
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Randy
SFN Regular
USA
1990 Posts |
Posted - 07/21/2003 : 13:39:51 [Permalink]
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| Well James! I've wondered where you've been. Still in the Klondike region of the Twin Cities these days? |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 07/21/2003 : 16:30:14 [Permalink]
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quote:
Originally posted by jmcginn
Actually it is quite common at least in the geological time scale and appears to flip on a regular basis.
(about 60 reversals in the last 20 million years) with reversals occuring on average every 100,000 years.
I haven't checked out those links, so I don't know if this mentioned there...
Hippy4christ, there's a different aspect to this shifting magnetic field:
When sedimentation occurs, magnetic substances leaves traces that shows the direction of the magnetic field at the time. We can trace the magnetic field in the strata, and see how it shifts in different layers. This piece of evidense contradict the claim(1) that all layers of strata came from Noah's Flood as told by the Old Testament.
(1) Argued by followers of the Young Earth Creationist doctrine. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
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Snake
SFN Addict
USA
2511 Posts |
Posted - 07/21/2003 : 20:41:31 [Permalink]
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quote:
Originally posted by walt fristoe
What can I say Randy?
Awesome!
Yes, it really is. Thanks from me too, Randy. |
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Darwin Storm
Skeptic Friend
87 Posts |
Posted - 07/21/2003 : 21:08:05 [Permalink]
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quote:
Originally posted by jmcginn
Also of interest in the link above in relation to the sun's magnetic field is that it reversals are very short, only 11-12 years. Hey I learned something today :>
Wow, I didn't know that. Very cool. |
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Fireballn
Skeptic Friend
Canada
179 Posts |
Posted - 07/21/2003 : 22:40:48 [Permalink]
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| Randy.....I set my background color to black centered your moon's libration animation.......and now my desktop is the envy of everyone who walks by...........thanks |
If i were the supreme being, I wouldn't have messed around with butterflies and daffodils. I would have started with lasers 8 o'clock day one!
-Time Bandits- |
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Randy
SFN Regular
USA
1990 Posts |
Posted - 07/22/2003 : 14:05:27 [Permalink]
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Don't thank me, thank this guy, and his efforts...
http://www.astrosurf.com/cidadao/animations.htm
Quite a backyard astronomer, to say the least. |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
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NubiWan
Skeptic Friend
USA
424 Posts |
Posted - 07/22/2003 : 14:40:14 [Permalink]
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quote:
Originally posted by Dr. Mabuse
Originally posted by jmcginn
Actually it is quite common at least in the geological time scale and appears to flip on a regular basis.
(about 60 reversals in the last 20 million years) with reversals occuring on average every 100,000 years.
".., on average every 100,000 years." 20 million years, 60 reversals..., BUZZZZZ!!! Does not compute!
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 07/22/2003 : 15:49:58 [Permalink]
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quote:
Originally posted by NubiWan
".., on average every 100,000 years." 20 million years, 60 reversals..., BUZZZZZ!!! Does not compute!
If GOD wasn't specific about numbers when He dictated the Bible, then we shoudln't be held accountable for a miscalculation every now and then... 
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Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
| Edited by - Dr. Mabuse on 07/22/2003 15:51:21 |
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Randy
SFN Regular
USA
1990 Posts |
Posted - 07/24/2003 : 14:37:02 [Permalink]
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Enjoy, good friends....
http://www.astro-nut.com/gibbousmoon.jpg |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
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Sanity
New Member
19 Posts |
Posted - 07/24/2003 : 18:36:16 [Permalink]
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quote:
Originally posted by hippy4christ
How come the moon's rotation is so perfect that it always shows one side? How could something like that just happen?
We've gotten trained to respond with the technical answers to questions like this, so we miss the obvious.
If the moon rotated so that we saw all of it, that would be the only "moon state" we'd be familiar with. We'd think that was the perfect "moon state." If we had no moon at all, we wouldn't question the lack of a moon, nor would we consider that that was an imperfect state of affairs.
If we were six limbed, purple skinned, with eye stems, we'd ask how did it come about that we were formed so beautiful and perfect.
All the "How did whatever come to be so perfect" questions are really asking "How did things come to be the way they came to be?"
(I'll join the crowd in saying thanks for the wonderful graphics!) |
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Dave W.
Info Junkie
USA
26022 Posts |
Posted - 07/24/2003 : 19:10:23 [Permalink]
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Randy wrote:quote:
Enjoy, good friends....
http://www.astro-nut.com/gibbousmoon.jpg
My God, it's full of sta....
Just kidding. Great photo. Stunning. Love the depth you can see with the crater-rim shadows and the like.
One question, though: when I look at this photo zoomed in so that one pixel of the photo takes up one pixel on my monitor, it appears that the edge of the Moon is not circular, but instead lumpy. Is that because edge-of-the-Moon features are actually a significant percentage of the Moon's diameter (remember: shrink the Earth to the size of a billiard ball, and it'd feel as smooth as a billiard ball), or is it due to image-compression artifacts? |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
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Randy
SFN Regular
USA
1990 Posts |
Posted - 07/24/2003 : 20:56:18 [Permalink]
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Nice observation, Dave W.
I think this fine image of the moon is large enough to just begin to see the "lumpy" effect of its terrain, the peaks and valleys here and there along the outer edge. As you know, as you view along the terminator line and see the highlighted mountains, perhaps they too would become "lumpy" on the edge if viewed from that angle and at this magnification. I would say Earth would have a similar waverly effect up in a very low orbit, don't you think?
It sure does from my feet-on-the-ground perspective. No doubt further up, to an extent.
If the astronmer that created this fine mosaic pulled back his magnification, the moon would then take on the billiard ball smoothness.
Just did a google on highest mountain on the moon. Came up with "Beta in the Leibnitz Range" at a whopping 36,000 feet. Imagine that. Course, goes without saying, there is no ocean on the moon to set exactly what "sea level" is. I believe the astroheads take a agreed upon medium for the moon's "sea" level to gauge the altitudes as they do for any planet/moon.
Correct me if I'm wrong. |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
| Edited by - Randy on 07/24/2003 20:57:03 |
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Phobos
New Member
USA
47 Posts |
Posted - 07/25/2003 : 09:28:57 [Permalink]
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Good point, Sanity.
Perhaps a more interesting question from a mystic (one that I have not heard from them) would be the coincidence of the moon's apparent size as compared to the sun (essentially identical) such that total eclipses are possible. Given that the moon's orbit is changing, at one time in the past and at some point in the future, total eclipses will not be possible. Someone may conclude we live in a special time. |
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Computer Org
Skeptic Friend
392 Posts |
Posted - 07/25/2003 : 09:35:04 [Permalink]
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quote:
Originally posted by Dr. Mabuse
quote:
Originally posted by NubiWan
".., on average every 100,000 years." 20 million years, 60 reversals..., BUZZZZZ!!! Does not compute!
If GOD wasn't specific about numbers when He dictated the Bible, then we shoudln't be held accountable for a miscalculation every now and then...
Uh. Err. But which of the numbers is right?- "On average every 100,000 years"? or
- "20 million years, 60 reversals"?
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Do thou amend thy face, and I'll amend my life. --Falstaff |
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