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Author   Topic : "abandoned city:daylight view"
BC1967
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Joined: 20 Sep 2002
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Location: Philadelphia

PostPosted: Tue Feb 04, 2003 8:15 am     Reply with quote
The "daylight" in this image is from a blackhole. I used the blue light since I figured the ambiant light would be like the glow that fission reactor fuel rods give off.
The singularity would be pumping out vast amounts of X-rays and gamma radition.
Any comments are welcome... and hoped for.


http://rendermonitor.no-ip.com/forum/viewtopic.php?t=44[/img]
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Inspector Lee
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PostPosted: Tue Feb 04, 2003 11:03 am     Reply with quote
Nice. It somehow doesn't feel like a city though without lights coming from the city it'self. Do you plan on adding those?
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BC1967
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PostPosted: Tue Feb 04, 2003 12:17 pm     Reply with quote
I thought of putting a few here and there, but decided to go with the abandoned angle.
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kana
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PostPosted: Tue Feb 04, 2003 1:53 pm     Reply with quote
i was going to go into a tirade about black hole physics. but i won't.
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LoTekK
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PostPosted: Tue Feb 04, 2003 7:04 pm     Reply with quote
kana wrote:
i was going to go into a tirade about black hole physics. but i won't.


I'll do you the favor and sum it up for you.

BC, nothing comes "from a black hole." And yes, that includes light, hence the nomenclature.

Anyways, nice monochromatic piece.
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diji
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PostPosted: Tue Feb 04, 2003 9:32 pm     Reply with quote
He didn't say that there was something coming from the singularity - he said it "would be pumping out vast amounts of X-rays and gamma radition". Quite a different thing.

It's true that nothing is emanated from the surface of a singularity, nor in fact, from anywhere within the event horizon. But singularities (especially spinning ones) and their accretion disks are often sources of different types of radiation, and vastly energetic jets of matter. Yes, you'd need an accretion disk to emanate radiation, but you'd need the gravity well and the energy it provides to make the accretion disk emenate anything.

I take it you're not a subscriber to Scientific American...

http://www.sciam.com/article.cfm?articleID=000870CB-A9AA-1C5E-B882809EC588ED9F
http://www.sciam.com/article.cfm?articleID=000CCCD7-AE41-1D9C-815A809EC5880000
http://www.sciam.com/article.cfm?articleID=000D9F85-A0F1-1C5E-B882809EC588ED9F
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kana
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PostPosted: Tue Feb 04, 2003 11:54 pm     Reply with quote
speaking of accretion discs, that city would be a part of it, now wouldn't it? hence, no city.
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BC1967
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PostPosted: Wed Feb 05, 2003 6:23 am     Reply with quote
Thanks diji
couldn't have put it better myself.

kana
If the planet were in a system near the center of the galaxy ( one like our own for instance ) there would be more than enough material to cause the accreation disc of the singularity to grow large enough to consume multiple systems. Not to metion the density of stars in the area would preclude anything like a dark night on a world nearby, not to mention the light thrown off by a massive accreation disc.
So. this city is on a world that is very close to the edge of the disc, and will soon meet the same fate as the other planets and stars of systems already swallowed by the singularity.
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diji
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PostPosted: Wed Feb 05, 2003 6:03 pm     Reply with quote
Being part of the accretion disk wouldn't be nearly as dangerous as being far above one of the singularity's poles - that's where extreme concentrations of high-energy particles are typically ejected. Those could easily make the "no cities" scenario true, with the radiation eroding the matter of the planet (to say nothing of a city on it) in a very short time.
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BC1967
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PostPosted: Wed Feb 05, 2003 8:10 pm     Reply with quote
ugh...true, not a healthy place to be.
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