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Author Topic:   Shrinking Sun
mark24
Member (Idle past 5226 days)
Posts: 3857
From: UK
Joined: 12-01-2001


Message 3 of 66 (97227)
04-02-2004 5:24 PM
Reply to: Message 1 by Mnenth
04-02-2004 5:13 PM


Mnenth,
So, uh, anyone have anything to say to this? Besides just denying it outright?
Deny it? How about I blow it out of the water?
http://www.asa3.org/...ronomy-Cosmology/PSCF9-86VanTill.html
As you can see the extrapolation that concluded that the sun is shrinking was concluded from too small a sample. Had they had a complete set of data they would've been able to see the sun occilate with a mearurable periodicity.
At some point you are going to realise that 90% of the material on creationist websites are lies.
Mark
[This message has been edited by mark24, 04-02-2004]

This message is a reply to:
 Message 1 by Mnenth, posted 04-02-2004 5:13 PM Mnenth has replied

Replies to this message:
 Message 5 by Mnenth, posted 04-02-2004 5:28 PM mark24 has replied

  
mark24
Member (Idle past 5226 days)
Posts: 3857
From: UK
Joined: 12-01-2001


Message 6 of 66 (97233)
04-02-2004 5:29 PM
Reply to: Message 4 by Mnenth
04-02-2004 5:25 PM


Mnenth,
Any scientist worth his/her salt wouldnt make such an obvious error as you are saying they did.
They clearly aren't worth their salt, then, are they?
Mark

This message is a reply to:
 Message 4 by Mnenth, posted 04-02-2004 5:25 PM Mnenth has replied

Replies to this message:
 Message 10 by Mnenth, posted 04-02-2004 5:37 PM mark24 has not replied

  
mark24
Member (Idle past 5226 days)
Posts: 3857
From: UK
Joined: 12-01-2001


Message 13 of 66 (97255)
04-02-2004 5:54 PM
Reply to: Message 5 by Mnenth
04-02-2004 5:28 PM


Mnenth,
Perhaps you should read the supporting link. Gilliland actually confirmed the periodicity that Crashfrog mentions, or did your cite not mention this to you? What he did claim was the possibility of a very small net shrinkage over 265 years. However the data is inconclusive, even Gilliland was cautious, suggesting that the data allowed for a 0.1 arc second per century over the last 265 years. Parkinson (J. H. Parkinson, "New Measurements of the Solar Diameter," Nature 304,518 1983), however, confirmed "that there is no evidence for any secular changes in the solar diameter, with a reduced upper limit". The tiny variation was within the limits of accuracy & is considered uninformative by astronomers today.
Just to put Gilliland's possible shrinkage into perspective. The sun increased diameter by 0.3 arc seconds per annum between 1967-1980. So even had Gilliland been correct his 265 year shrinkage would have been wiped out in under a year between the above dates, & not only that but exceeded by the same for every year thereafter until 1980.
I would also like a cite that your source used "much more complete data set". Given that my cite uses measurements from when records began, I find this a little unlikely.
Mark

This message is a reply to:
 Message 5 by Mnenth, posted 04-02-2004 5:28 PM Mnenth has replied

Replies to this message:
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mark24
Member (Idle past 5226 days)
Posts: 3857
From: UK
Joined: 12-01-2001


Message 17 of 66 (97260)
04-02-2004 6:05 PM
Reply to: Message 15 by Mnenth
04-02-2004 5:58 PM


Recent enough to incorporate yours.

This message is a reply to:
 Message 15 by Mnenth, posted 04-02-2004 5:58 PM Mnenth has replied

Replies to this message:
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mark24
Member (Idle past 5226 days)
Posts: 3857
From: UK
Joined: 12-01-2001


Message 22 of 66 (97266)
04-02-2004 6:18 PM
Reply to: Message 18 by Mnenth
04-02-2004 6:09 PM


But looking back over Gilliland's work, you are correct in that he concluded that there was the possibility for a .2 decrease, not that it was proven. I misread that, and appologize for it. But that still doesnt get rid of the possibility for the sun shrinking, we just dont have enough data to prove it either way.
If the sun is shrinking we should see clear unequivocal evidence that it is, right? That we don't have that evidence is suggestive of what, do you think? It is not for me to "prove" that the sun isn't shrinking, it is for you to show that it is, & until you do it is a non-argument in the creation/evo debate.
Mark

This message is a reply to:
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mark24
Member (Idle past 5226 days)
Posts: 3857
From: UK
Joined: 12-01-2001


Message 28 of 66 (97272)
04-02-2004 6:38 PM
Reply to: Message 20 by Mnenth
04-02-2004 6:13 PM


Mnenth,
The earth's rotation has been decreasing, the earth is losing 1/1000 of a second every day. Every 10 months they add a second to the clocks. If you go back millions of years life could not have been supported on this planet. If the earth were billions of years old the centrifugal force would have notably deformed the earth surface. Is this info totaly incorect?
http://pages.prodigy.com/suna/earth.htm
The earth is slowing down but it amounts to a daytime difference of a few hours. If the earth slows 2.2 secs/100,000 years this roughly equates to a 21 hour day during the Cambrian explosion. It would mean a day length about 10 hours long when the first life appeared. At worst you'll weigh a couple of ounces less at the equator due to centrifugal forces.
The National Maritime Museum puts the rate change as 1.6 seconds per 100,000 years. To be fair it was certainly faster in the past, but not appreciably.
I have no idea where you get 1 sec per 10 months!
Mark
[This message has been edited by mark24, 04-02-2004]

This message is a reply to:
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Replies to this message:
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