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Cryptic Studios Team
Join Date: Jun 2012
Posts: 2,519
# 46
08-23-2013, 07:39 PM
Alright, you want to get into specifics?

A Dyson sphere is very large, and has a lot of mass, but it's not very dense. 99% of it is empty space. So. . . . gravity? Does the gravity pull you toward the center of the sphere? Does it pull you toward the edge? (even on the inside?) Is the edge dense/thick enough to warrant localized gravity that would allow you to stick to the inside?
Now's where someone says the whole sphere is spinning, and that what holds you to the inside is centripetal force. That would work well enough in a ring world, but you can't spin a sphere in all directions simultaneously, so you're going to end up with areas with less (or no) apparent gravity (like the poles).

Ok, so enough with gravity, when you're standing on the inner surface of the sphere, and look up, what do you see? If you're inside the atmosphere, you'll see sky, but you'd also see the opposite wall of the sphere. Those of you who argue that you couldn't see the opposite wall, why not? I can see Jupiter on a clear night. Now if Jupiter was the whole sky. . . I'm pretty sure it would be pretty damn bright.

How about if you are above the atmosphere? You don't get sky anymore. . . but you don't get blackness. The entire sky would be filled with brightly lit planet surface, perhaps with some darker sections if there is something shading them from the sun.

Which leads us to night/day. Lots of Dyson concepts show big panels encircling the sun (presumably orbiting) such that they cast shadow on the inner surface. But. . . the opposite side of the sphere is entirely lit. It'd be like standing in the shade at earth. Just because you're not in direct sunlight doesn't mean the entire sky isn't brightly lit (and thus, indirectly lighting your side) Plus, if you have big wedge shaped solar blocks like that, you'd still have a problem at the poles.

What did I miss?

Originally Posted by nitsua116 View Post
Uh. Any chance I can get that concept art in about 1900x1200? Its friggin stunning!
I know we have it posted on here somewhere, but I couldn't find it, so I just did a google search. That's the only one I could find.
Only YOU can prevent forum fires!

Last edited by tacofangs; 08-23-2013 at 07:44 PM.