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Old 07-02-2019, 07:12 PM   #61
TippetsTX
 
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Join Date: Sep 2018
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Default Re: Cidri Genesis

Quote:
Originally Posted by ColinK View Post
Um...it's not just finding a nice, elevated observation point, or a clear day.

If your observer is inside a Dyson sphere world, is there a star in the center?

If so, is there vacuum around the star? How much vacuum? This determines whether it is possible to see directly across the interior of the Dyson sphere to the land masses and oceans on the other side.

Enough atmosphere can block vision. We're talking about several thousand miles or more of atmosphere, but in a Dyson sphere that might be possible.

That leads to the other question, of course. Do you want people to see the major objects on the opposite side of the sphere? Do you want telescope-equipped observers to be able to see rivers, lakes, maybe big cities?
I have no idea what the math would be for the interior of a Dyson Sphere, but I'm pretty certain that the 'horizon' distance would be more a factor of atmospheric distortion since surface curvature is inverse. The measurements above, however, are specific to the surface of a normal (though massive) planetary body.

My version of Cidri is not a Dyson Sphere.
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Last edited by TippetsTX; 07-03-2019 at 07:32 AM.
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Old 07-02-2019, 11:21 PM   #62
Skarg
 
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Default Re: Cidri Genesis

My comments were about the normal situation of being on the outside surface of a globe.

A Dyson sphere seems like it brings up an endless number of issues, to me.

The first of which being that the curve of the planet would be in the opposite direction, meaning you could see everything on the inside unless something prevented it, like clouds or haze, but unless that was always quite thick everywhere, people could get views of how the world curves UP everywhere.

And day/night cycles, moon, planets and stars would all need some peculiar way to seem to appear, and almost surely not behave as they do for people navigating the outside surface of a globular planet or else not be a thing.

And on and on.
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