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Author Topic: Dyson Sphere  (Read 5509 times)

Offline biomed0101

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Dyson Sphere
« on: 19/08/2005 13:24:27 »
Hello everyone, I´m new to this forum, hope to learn a lot from it.

My question is about the Dyson sphere, does anyone think that, having the right materials, it´s possible to make such a huge ¨apparatus¨?

:P


 

Offline neilep

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Re: Dyson Sphere
« Reply #1 on: 19/08/2005 19:24:00 »
Hi Umit,

Welcome to the forum :)....Dyson Sphere eh ?...can you imagine the calculations needed just to start designing it ?...however, who knows what the future holds and I think as long as we don't become extinct by our own means or through a natural catastorphe then I see no reason why in the distant future such a thing should not be possible ......where would one get all the materials ?...here's a cool link http://www.nada.kth.se/~asa/dysonFAQ.html

Cheers

Neil


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Offline daveshorts

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Re: Dyson Sphere
« Reply #2 on: 19/08/2005 19:56:21 »
I think it is very non trivial to do as a ridgid structure, although you may be able to do it with lots of small spacecraft orbiting on different orbits that over all stop all the light getting out...

I believe that a large circular rope orbiting something is not stable so you would either have to have some sort of active way of stabilising it or make it very rigid... which on that scale would be interesting... but then again it would involve some serious technology anyway so who knows what technology you would have developed

I would have thought that getting to the surrounding stars would be easier so unless there is a galactic overpopulation problem it wouldn't be an issue...
 

Offline Ultima

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Re: Dyson Sphere
« Reply #3 on: 19/08/2005 22:12:04 »
Yeah the shear and stress on the material would be... well ASTRONOMICAL, we don't have anything that could withstand that. As daveshorts said you could make it out of some dynamic structure. But there isn't enough stuff around to make one is there?? atom wise. Plus what would be the point by the time you finish making it the sun is all knackered out. A ring like from the book Ringworld might be quite cool but would still hold up to most of the same problems. If you could hollow out the inside of the Earth would its rotation be enough to hold you to the "walls" cos that would be pretty rad. Set up some form of fusion reactor floating in the centre and you have a mini internal solar system protected from anything going on outside like comets/solar radiation etc. Use the bits you carve out to make habitable satellites, or interstellar colonisation thingies. Then the bits you send out into space setup "trade" routes to bring back hydrogen from nebulas to feed the good ol' fusion reactor back home.

I call it: The Super! Matt'o'sphere'a'rama, a synergistic strategy to survive solar lolacausts!

wOw the world spins?
« Last Edit: 19/08/2005 22:20:34 by Ultima »
 

Offline David Sparkman

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Re: Dyson Sphere
« Reply #4 on: 20/08/2005 03:37:55 »
And how would you explain to the enviromental movement that the spotted toad (that is fun to lick) and all the other endangered species will have to adjust to a new inviroment? lol it would never fly...

Seriously though, I think there will be more interesting problems, like terraforming Venus, that we  can take on first.

David
 

Offline neilep

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Re: Dyson Sphere
« Reply #5 on: 20/08/2005 03:57:40 »
The idea of a Dyson Sphere is Fantastic though isn't it ?....I'm tempted to start building one myself out of cocktail sticks....I'll let you know when I've finished !...in the mean time, I have to dig out the Star Trek TNG episode featuring a Dyson Sphere.....you're all welcome round my house to watch it !

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sharkeyandgeorge

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Re: Dyson Sphere
« Reply #6 on: 20/08/2005 14:44:25 »
perhaps a dyson sphere isnt so far fetched sure the calculations and designs involved would be in credable complex but by the time we are capable of making these designs woldnt the advances in robotics mean that you would have a workforce capable of permenant space work with no need to rest follows plans exactly and is capable of finishing the work thousands of times faster than the same amount of men indeed you could send the robotic workforce to another solar system have them mine and refine all the matter in the system construct a sphere and we could just follow on a couple of hundred years later and start living in it

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Offline Ultima

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Re: Dyson Sphere
« Reply #7 on: 21/08/2005 21:34:41 »
Erk, I could design one now... it looks like a sphere orbiting the Sun at the same distance as the Earth and a rotational speed to create the impression of 1G of force. I don’t think there is enough matter in the solar system to do it though. A ring is a bit more possible; think about how big that Sphere would be. Plus wouldn't there be a lack of fake gravity as you got towards the poles on the inside of the sphere? It's a stoopid idea tbh.

wOw the world spins?
« Last Edit: 21/08/2005 21:36:15 by Ultima »
 

Offline daveshorts

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Re: Dyson Sphere
« Reply #8 on: 21/08/2005 21:43:34 »
Think about what happens at the north pole of the construction...
 

Offline Ultima

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Re: Dyson Sphere
« Reply #9 on: 21/08/2005 22:07:24 »
It would stay relatively stationary in space therefore it would not give you any sensation of "gravity".

wOw the world spins?
 

Offline neilep

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Re: Dyson Sphere
« Reply #10 on: 21/08/2005 23:06:33 »
...I've almost finished...it looks really good so far !

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Offline daveshorts

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Re: Dyson Sphere
« Reply #11 on: 22/08/2005 12:30:12 »
quote:
Originally posted by Ultima

It would stay relatively stationary in space therefore it would not give you any sensation of "gravity".



It also wouldn't be in tension so have to be a self supporting arch the size of the solar system... this is one bridge I don't want to design...
 

Offline gsmollin

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Re: Dyson Sphere
« Reply #12 on: 24/08/2005 01:35:36 »
Like, yea, dude. Dyson et. al. were ignorant of orbital dynamics. Only one radius of a rigid sphere can be in "orbit". All others would be sub-orbital or super-orbital, so they would be in compression or tension. The poles, of course, are in compression.

All the other ideas are similarly flawed. I'm not even going to bother adding the details. This is sci-fi.

OBTW, Neil, I've started working on mine using popsicle sticks and a hot glue gun.

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Re: Dyson Sphere
« Reply #12 on: 24/08/2005 01:35:36 »

 

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