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#122595 - 04/24/07 10:30 PM Stars are God's Fireworks
bevin Offline


Registered: 09/04/02
Posts: 4699
Loc: New England
Let's face it, everybody likes a good blast that damages nothing important - and apparently God does too - because His fire-crackers are as far above ours as the stars are above the glow-worms...

This thread of nuggets is simply to show some of biggest things God has made - although they are mostly so far away, we haven't had a chance to see them until the last few decades...

/Bevin

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#122597 - 04/24/07 10:34 PM Re: Stars are God's Fireworks [Re: bevin]
bevin Offline


Registered: 09/04/02
Posts: 4699
Loc: New England
Not so far away, but hidden by the brightness of the sun, are the sunspots.

http://homepage.ntlworld.com/robin.scagell/sunspots/pst_doublestack.htm

Just how hot is the surface of the sun away?

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#122599 - 04/24/07 10:54 PM Re: Stars are God's Fireworks [Re: bevin]
David Koot Offline
Craftsman

Registered: 03/13/06
Posts: 3513
Loc: N38d14.516m, W122d37.982m
It's been a few years, but as I recall, the surface of the sun is around 10,000 deg. F. It gets much hotter closer to the core.

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#122712 - 04/25/07 10:42 PM Re: Stars are God's Fireworks [Re: David Koot]
bevin Offline


Registered: 09/04/02
Posts: 4699
Loc: New England
Good recall, David!

http://solar-center.stanford.edu/compare/comparison.html

 Quote:
Each square centimeter of the solar surface emits as much light as a 6000 Watt lamp.

The temperature of the photosphere is about 5800 K. ... Water boils at about 373 degrees Kelvin, therefore, the surface of the Sun is about sixteen times hotter than boiling water.


(5800K + 273) * 9/5 = about 11000 F

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#122714 - 04/25/07 10:48 PM Re: Stars are God's Fireworks [Re: bevin]
bevin Offline


Registered: 09/04/02
Posts: 4699
Loc: New England
The sun isn't exactly a placid place - here are some great time-lapse videos of its surface...

http://sohowww.nascom.nasa.gov/data/realtime/mpeg/

/Bevin

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#122715 - 04/25/07 10:59 PM Re: Stars are God's Fireworks [Re: bevin]
Bravus Global Moderator Online   content
Husband and Father

Registered: 09/05/04
Posts: 6681
Loc: Brisbane, Australia
 Quote:
(5800K + 273) * 9/5 = about 11000 F


{pedantic git}(5800-273)* 9/5 + 32 = a touch under 10000 F{/pedantic git}

(because K starts at absolute zero so you have to subtract 273 to get it to Celsius)

still pretty warm, though ;)
_________________________
It's like no-one ever read their Gibbon

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#122737 - 04/26/07 02:11 AM Re: Stars are God's Fireworks [Re: Bravus]
bevin Offline


Registered: 09/04/02
Posts: 4699
Loc: New England
I'll use my favorite teacher-excuse

"I put it in there on purpose to see if anyone noticed"

Of course, that ain't true - but it sounds good!

/Bevin

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#122743 - 04/26/07 03:13 AM Re: Stars are God's Fireworks [Re: bevin]
D. Allan Moderator Offline
Panning for gold

Registered: 08/28/00
Posts: 3883
Loc: les Etats-Unis d'Amerique
Those time lapse movies of the sun are amazing; it looks like one bon-fire against another.

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#122848 - 04/26/07 11:57 PM Re: Stars are God's Fireworks [Re: D. Allan]
bevin Offline


Registered: 09/04/02
Posts: 4699
Loc: New England
The temperature of the surface was estimated in the late 1700's by William Herschel - and he got it right to within 10% of so! It is a fascinating experiment. He simply timed a sheet of ice melting in the noon-day sun, imagined the sheet as part of a huge sphere the same thickness surrounding the sun, shrunk the sphere without changing its mass to sit on the sun's surface - so it was now a lot thicker, and used known physics to determine how hot the surface must be to melt that much ice that quickly!

The surface erupts in huge flares, like these ones...

http://sohowww.nascom.nasa.gov/hotshots/2003_11_04/

which throw material far into space - indeed way beyond the Earth's orbit...

The Earth is, of course, quite a long way from the Sun - how far?

/Bevin

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#122850 - 04/27/07 12:10 AM Re: Stars are God's Fireworks [Re: bevin]
D. Allan Moderator Offline
Panning for gold

Registered: 08/28/00
Posts: 3883
Loc: les Etats-Unis d'Amerique
"Three light-minutes" seems to blaze up into my memory. ¿About 33.48 million miles?

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