1733: "Solar Spectrum"

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dmca
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1733: "Solar Spectrum"

Postby dmca » Thu Sep 15, 2016 12:58 pm UTC

Image

Alt text: I still don't understand why the Sun paid the extra money for Transitions lenses.

Got me reading on line spectra for the first time since undergrad chemistry

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HES
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Re: 1733: "Solar Spectrum"

Postby HES » Thu Sep 15, 2016 2:12 pm UTC

I'm more concerned about where the sun got his hat from.
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cellocgw
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Re: 1733: "Solar Spectrum"

Postby cellocgw » Thu Sep 15, 2016 2:41 pm UTC

The sun has spectral (absorption) lines.
The big question is: does the sun have tan lines?
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Re: 1733: "Solar Spectrum"

Postby mschmidt62 » Thu Sep 15, 2016 5:25 pm UTC

Well they are obviously fancy sunglasses because most sunglasses don't have narrow spectral lines--that characteristic would sort of defeat the purpose of normal sunglasses, wouldn't it? And if sunglasses are normally worn to protect from UV radiation, why are the absorptions down in the red end of the spectrum? My only guess is that the Sun is tired of the sight of Mars and that ugly old spot on Jupiter--but just having sharp line absorptions isn't going to help much with that.

I was originally going to complain that the lines were too sharp for condensed-matter sunglasses, but then I realized that the Sun's sunglasses would probably have to be gaseous or plasmonic anyway.

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Re: 1733: "Solar Spectrum"

Postby alanbbent » Thu Sep 15, 2016 6:25 pm UTC

Yeah yeah, a joke about the sun wearing huge sunglasses. Now can we get back to arguing about global warming?

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Re: 1733: "Solar Spectrum"

Postby hamjudo » Thu Sep 15, 2016 6:43 pm UTC

I have reverse engineered an insignificant part of the joke. The wikipedia page for Fraunhofer lines https://en.wikipedia.org/wiki/Fraunhofer_lines only has labels for the "Major Fraunhofer lines". Our amazing cartoonist has attributed the unlabeled lines to "those giant sunglasses".

Image

I was shocked to learn that there were some compounds represented in those lines. I didn't realize the photosphere was cool enough for compounds. Then after a wee bit of further research, I unlearned it. The compounds seen in the solar spectrum are Telluric Contamination,
https://en.wikipedia.org/wiki/Telluric_contamination because the spectrum was measured on earth after the sunlight had passed through our atmosphere.

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Re: 1733: "Solar Spectrum"

Postby Copper Bezel » Fri Sep 16, 2016 3:48 am UTC

Ha! Excellent. That definitely makes it better.

alanbbent wrote:Yeah yeah, a joke about the sun wearing huge sunglasses. Now can we get back to arguing about global warming?


I loved that strip, happened to read it before anyone got into anything, knew exactly where the thread was going to go, and haven't been back in since.
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Re: 1733: "Solar Spectrum"

Postby rhomboidal » Fri Sep 16, 2016 4:58 am UTC

But the sun should really have those spots biopsied.

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Re: 1733: "Solar Spectrum"

Postby flicky1991 » Fri Sep 16, 2016 5:16 am UTC

hamjudo wrote:I didn't realize the photosphere was cool enough for compounds.
Well of course it's cool, it's wearing sunglasses. 8-)
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Re: 1733: "Solar Spectrum"

Postby Eternal Density » Fri Sep 16, 2016 10:52 am UTC

Deal With It. 8-)
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Re: 1733: "Solar Spectrum"

Postby somitomi » Fri Sep 16, 2016 6:04 pm UTC

alanbbent wrote:Yeah yeah, a joke about the sun wearing huge sunglasses. Now can we get back to arguing about global warming?

Well sure, so what if we stopped worrying about CO2, and just place some big, tinted piece of glass into orbit around the Earth-Sun L1.
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YTPrenewed
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Re: 1733: "Solar Spectrum"

Postby YTPrenewed » Thu Sep 22, 2016 4:24 am UTC

What kind of sunglasses block nothing more than single-digit percentages* of the visible wavelengths anyway?

*Maybe less than that, since I based that on looking at this comic in MS Paint, and I doubt the spectral line widths shown in this comic are meant to represent the actual spectral line width...

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Re: 1733: "Solar Spectrum"

Postby somitomi » Thu Sep 22, 2016 5:49 pm UTC

YTPrenewed wrote:What kind of sunglasses block nothing more than single-digit percentages* of the visible wavelengths anyway?

*Maybe less than that, since I based that on looking at this comic in MS Paint, and I doubt the spectral line widths shown in this comic are meant to represent the actual spectral line width...

Shady knock-off ones.
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The Moomin
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Re: 1733: "Solar Spectrum"

Postby The Moomin » Mon Sep 26, 2016 10:16 am UTC

There were reports of an "alien megastructure" detected around a distant star a while back weren't there?

Could this in fact be a star that has its hat on? Or sunglasses?

Maybe an alien race is constructing emojis using stars for the yellow circular face to communicate with us.
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somitomi
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Re: 1733: "Solar Spectrum"

Postby somitomi » Mon Sep 26, 2016 3:48 pm UTC

The Moomin wrote:There were reports of an "alien megastructure" detected around a distant star a while back weren't there?

Could this in fact be a star that has its hat on? Or sunglasses?

Maybe an alien race is constructing emojis using stars for the yellow circular face to communicate with us.

I'd rather not communicate with aliens, whose best attempt at communication is the use of emojis.
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Soupspoon
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Re: 1733: "Solar Spectrum"

Postby Soupspoon » Mon Sep 26, 2016 4:48 pm UTC

somitomi wrote:I'd rather not communicate with aliens, whose best attempt at communication is the use of emojis.

:cry:

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Re: 1733: "Solar Spectrum"

Postby Pfhorrest » Mon Sep 26, 2016 6:28 pm UTC

No see, the aliens are also time-travellers, and the humans in their future communicate entirely in emoji, so it's the only human language they know to use.
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