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Old 21-February-2005, 02:24 AM
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Default Sun's color is.....

...not known, yet. :-?

Warning: Physicists are not allowed to read further! (reasons stated below)

If you do happen to know, with substantiation, the true extraterrestrial color of the sun, after it's intensity has been attenuated to a normal flux for our eyes, I will be most appreciative if you share this important knowledge. I could then stop my troublesome quest.

Abstraction:
This is a very complex subject of enormous triviality, yet, possibly, warm and tender for the hearts of all mankind. “Complex” because it is a mystery why it is a mystery. The Sun's color is fairly easy to obtain - reproduce it's visible spectrum (@AM0), and you got it . (Yet, this is not as easy as I hoped it would be. :x )

I have not found much in astronomy regarding prior efforts or even a prior a priori oratory. (I know ‘cause I have spent dozens of minutes googling.) From his book, the BA has clarified nicely the color which the sun is not - yellow. But the begging question (now a serious itch) remains - "what color is it really?".

The Sun's color is also complex in the sense one can easily say that this subject is clearly over the heads of most astronomers and physicists. This statement can not be said very often, obviously. Considering the consistency of the subject being over their heads, around noontime everyday, you would think they would consider it with greater interest. Perhaps they are.

Maybe additional complexity is inherent in the sociological/psychological aspects of this topic. Let’s say I’m an astronomer. Hmmmm, ok, let’s say you’re an astronomer. You were on the neutrino team arguing with physicists about the neutrino problem. You help show that they have mass and the single-flavored nuclear core neutrinos emissions turn into all three flavors. Thus, the massless neutrinos now have mass and the 1/3 issue is resolved. You finally have the physicists on their heels at a major luncheon. You summarize the winning arguments on the issue and you sense the sea of accolades rising before you because of your proven mastery of the Sun. Just as you have the servers place the main entre (crow) on the physicists table, one physicists stands-up in the crowd and demands - “but can you tell us the color of the Sun?”. Yeowww!

Therefore, I hope to discover this knowledge and pass it to the folks I greatly admire - astronomers. (Be clear, I admire physicsts also) Thus, saving them from the horrible and inevitable fate illustrated above. Naturally, this should be done under the table so as to not cause disgust among physicists once they have discovered their lost opportunity to cast anguish upon our noble and stellar scientists.

The following is limited information on the solar determination device as it makes light of the experiment itself. However, I can share some things. Since the solar irradiance is known both above our atmosphere (extraterrestrial) and from our surface (terrestrial), a template can be made to reproduce the sun’s visible spectrum as the eye would behold it in space. Of course, the intensity of the light must be attenuated to allow the eye to “see” the color.

Procedure 1: Gain familiarity with prism and lenses.
Equipment 1: F2 prism and large double convex lens.
Result 1: My pants caught on fire. While recombining the colors through the double convex lens, I failed to consider the sunlight which was also passing through the lens. [who knew it would handle both?]. I noticed an alarming amount of smoke coming off my blue geans. I did not need to notify OSHA of this incident as it was minor. Also, my jeans will be a little cooler come summer.

I failed in getting my nice ebay prisms calibrated. However, new calibrated prisms have arrived.
With some help from A Hundred Pardons (real name being withheld till I have his approval), I have interpolated the prism’s index of refraction for each appropriate wavelength. This will allow sunlight color dispersion to align with the template properly.

Wish me luck.

Project name suggestions welcome. Funding is private but exceeds the S.A.D. experiment.

Eroica, prepare for trepidations.

[Many delays are likely, in fact, my son is buggin me to play ping-pong]

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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.
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Old 21-February-2005, 03:03 AM
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Default Re: Sun color is.....

Quote:
Originally Posted by George
With some help from A Hundred Pardons (real name being withheld till I have his approval), I have interpolated the prism’s index of refraction for each appropriate wavelength. This will allow sunlight color dispersion to align with the template properly.
I wonder who it could be. :-k
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Old 21-February-2005, 03:52 AM
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Default Re: Sun color is.....

Quote:
Originally Posted by Candy
Quote:
Originally Posted by George
With some help from A Hundred Pardons (real name being withheld till I have his approval), I have interpolated the prism’s index of refraction for each appropriate wavelength. This will allow sunlight color dispersion to align with the template properly.
I wonder who it could be. :-k
I suppose we could conduct a contest? Well, maybe not.

[edit: method test... here
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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.
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Old 04-May-2005, 05:21 AM
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Default Sun's color to my earthbound eyes

I think a lot of the color perceived is subjective and influenced by the wiring of the brain. I've always perceived the Sun's disk as very nearly white. Certainly any projected image of the Sun (as with a pin hole "camera" for solar eclipses) appears white. The only time I do not see it as white is near the horizon where it first takes on a yellow, then orange, and finally red hue (it doesn't always make it to red, depending, I suppose, on the amount of dust in the air).

My thought, then, is that our memory of seeing the Sun near the horizon affects our remembered perception of the sun. Other factors such as the amount of blue scattered, the sensitivity of our eyes at different wavelengths and experience with other sources of light, such as candles also influence our perception.

Of course I may suffer from some small amount of color blindness (when I entered the military many aeons ago I had to take a color perception test and missed one of the 20 or so figures). So my perception of the whiteness may be influenced by that, too.

Why do children color the sun yellow? That's what color adults tell them the sun is, and white on a white paper doesn't show up well. (Notice, please, that children often draw people with purple or other unusual colored crayons).

Just my nickle's worth.
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Old 04-May-2005, 11:16 AM
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Default Re: Sun's color to my earthbound eyes

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Originally Posted by switchtech
I think a lot of the color perceived is subjective and influenced by the wiring of the brain.
Welcome to the board switchtech. This is a key issue in Psychology studies involving perception. It comes down to psychologists currently lacking the means of determining if two people perceive the exact same colour when they look at an object. I don't have any links but if you do a Google search for this issue you may find a lot of discussion in Psychology journals about it.
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Old 04-May-2005, 02:19 PM
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There are people on GLP who will swear to you that the Sun has turned from yellow to white in their lifetimes.
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Old 04-May-2005, 03:20 PM
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Default Re: Sun's color to my earthbound eyes

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It comes down to psychologists currently lacking the means of determining if two people perceive the exact same colour when they look at an object. I don't have any links but if you do a Google search for this issue you may find a lot of discussion in Psychology journals about it.
No, it's been determined. They do not.

How do I know? Because even one person (me) doesn't perceive the same thing each time--here's the Checker Shadow Illusion created by Ed Adelson. No way do squares A and B look the same to me!

And it's easy to prove that they are. Just copy the image into a paint program, and drag one box over next to the other. They are identical.
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Old 04-May-2005, 04:20 PM
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Quote:
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There are people on GLP who will swear to you that the Sun has turned from yellow to white in their lifetimes.
Maybe the chemtrails cause the color change.
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Old 04-May-2005, 05:02 PM
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There are people on GLP who will swear to you that the Sun has turned from yellow to white in their lifetimes.
Maybe the chemtrails cause the color change.
Somebody's spent way too much time at GLP lately....

But I'll have to suggest that the next time the subject comes up.
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Old 04-May-2005, 06:37 PM
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Quote:
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Somebody's spent way too much time at GLP lately....
I wish someone would beat me with a stick and drag me out of there.
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Old 05-May-2005, 12:43 PM
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Welcome aboard, switchtech! =D>

This is a fun topic.

Here are a couple of other threads you might enjoy..... here and also here .
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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.
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Old 05-May-2005, 12:51 PM
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Default Re: Sun's color to my earthbound eyes

Quote:
Originally Posted by A Thousand Pardons
...even one person (me) doesn't perceive the same thing each time--here's the Checker Shadow Illusion created by Ed Adelson. No way do squares A and B look the same to me!
I don't recall a better example. Thanks. =D>

Do you have any illusion illustrations dealing with colors?
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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.
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Old 05-May-2005, 05:16 PM
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Default Re: Sun's color to my earthbound eyes

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Quote:
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...even one person (me) doesn't perceive the same thing each time--here's the Checker Shadow Illusion created by Ed Adelson. No way do squares A and B look the same to me!
I don't recall a better example. Thanks. =D>

Do you have any illusion illustrations dealing with colors?
Do you mean, similar to that one, where a square of one color is different from another square? I tinted that illustration, and it still worked--but I assume you mean not just different tints.

I don't see why it wouldn't work.
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Old 05-May-2005, 05:29 PM
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Default Re: Sun's color to my earthbound eyes

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Do you mean, similar to that one, where a square of one color is different from another square? I tinted that illustration, and it still worked--but I assume you mean not just different tints.

I don't see why it wouldn't work.
I still don't buy it. The photo's tint on the first page is not quite the same tint on the second page.
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Old 05-May-2005, 05:35 PM
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Default Re: Sun's color to my earthbound eyes

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Do you mean, similar to that one, where a square of one color is different from another square? I tinted that illustration, and it still worked--but I assume you mean not just different tints.

I don't see why it wouldn't work.
I still don't buy it. The photo's tint on the first page is not quite the same tint on the second page.
We may be talking about two different things. I think there's only one page.
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Old 05-May-2005, 05:46 PM
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Default Re: Sun's color to my earthbound eyes

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Originally Posted by Candy
Quote:
Originally Posted by A Thousand Pardons
Do you mean, similar to that one, where a square of one color is different from another square? I tinted that illustration, and it still worked--but I assume you mean not just different tints.

I don't see why it wouldn't work.
I still don't buy it. The photo's tint on the first page is not quite the same tint on the second page.
We may be talking about two different things. I think there's only one page.
What's this page, then (from my computer's history)? Are you messing with me? 8-[
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Old 05-May-2005, 05:57 PM
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Default Re: Sun's color to my earthbound eyes

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Originally Posted by A Thousand Pardons
Quote:
Originally Posted by Candy
Quote:
Originally Posted by A Thousand Pardons
Do you mean, similar to that one, where a square of one color is different from another square? I tinted that illustration, and it still worked--but I assume you mean not just different tints.

I don't see why it wouldn't work.
I still don't buy it. The photo's tint on the first page is not quite the same tint on the second page.
We may be talking about two different things. I think there's only one page.
What's this page, then (from my computer's history)? Are you messing with me? 8-[
Moi? Appears to be the page that you get from clicking on the "proof" link on the first page, and then the "more evidence" link.

Are you saying the square A and the square B are actually different at the first page?
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Old 05-May-2005, 06:18 PM
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You don't think the "proof" is a little tainted on the explanation page? Are you not seeing this on the explanation page? 8-[

edited
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Old 05-May-2005, 06:26 PM
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