Communication Record between Tang Feng & Liu Cixin on Dyson Sphere
In the summer of 2009, Liu Cixin and Feng Tang discussed and laid the foundation for the Dyson Sphere Metaverse settings. We decided to share this valuable source material with Dyson Sphere enthusiasts. Approach Liu Cixin’s science fiction metaverse and write the stories on Dyson Sphere together!
Liu Cixin & Tang Feng’s Chat Transcript
2009–05–08 09:28:46 Tang Feng
Here is my current model of the bubble world.
1. It’s an ellipsoidal bubble world, equatorial diameter of 10,000 km, pole diameter of 40,000 km. The central point light source vibrates up and down, producing the seasons. The air near the light source is thin and close to a vacuum. The poles are open and the air is loose. The inner wall of the equator has a gravity of 1.5G and an atmospheric pressure of 200,000 psi
2. The equatorial wall of the bubble has a central annular ocean, high temperature, high pressure, humidity and heat, which is the engine of the water cycle.
3. The outer wall of the cavity is hidden with multiple straps, which are crisscrossed and compact in texture. Several of the rings are in a state of continuous fission, with high temperatures, which serve as engines of geological circulation in the inner wall.
2009–05–08 09:29:03 Tang Feng
Liu.
What’s you currently model?
2009–05–08 10:24:07 Liu Cixin
The world is too small for stories to unfold.
Even more crowded than the earth, considering how closed space is.
2009–05–08 10:39:12 Tang Feng
Well… I don’t insist. Liu, make a model.
2009–05–08 10:42:43 Liu Cixin
Is there anything inconsistent about 150,000 kilometers in diameter? It seems that the logic is similar to this. I would like to expand your model to the diameter of 150,000 kilometers. In addition, it is better to have a pure sphere. Ellipsoid is complicated in mechanics, and there may be many troubles in the future.
2009–05–08 10:44:05 Tang Feng
Ellipsoids are largely designed to solve this problem:
(Quoted by K-L- 2009–5–7 13:38
Have you overlooked a problem, the centrifugal force on the wall outside the equator is not perpendicular to the ball, that is to say, from the equator to the higher latitude is a slope world, the slope is getting steeper and steeper. Although gravity drops near the poles, the region is unstable. So everything in the sphere tends to slide towards the equator. We can’t disregard that, can we?)
I think the problem is quite serious. If you go up to 150,000 kilometers in diameter, then the inner space is so massive, you actually make a circular world.
2009–05–08 10:46:36 Liu Cixin
The ellipsoid problem is still there, but at a reduced level. In fact, the slope problem is originally a rich of resource. It is not a bad thing.
2009–05–08 10:47:28 Tang Feng
Slope is a subject matter resource… You mean differentiate the terrain? Step world?
2009–05–08 10:50:00 Liu Cixin
The world is supposed to be novel, and the endless sloping earth is a novel, with rivers and glaciers flowing towards the equator and so on.
It’s not a ladder, it is an inclined slope.
2009–05–08 10:52:08 Tang Feng
Sloping slopes, with mountains 100, 000 kilometers high on both sides, relative to people near the equator…
At least a hundred thousand kilometers high.
Even at equatorial atmospheric pressure of two atmospheres on Earth, it is only a few thousand kilometers thick. A mountain 100, 000 kilometers high, most of it standing in a vacuum.
2009–05–08 10:53:48 Liu Cixin
Mountains in a vacuum are cool.
I don’t see any inconsistency. Are there too many vacuum spaces?
2009–05–08 10:55:58 Tang Feng
Yes. Look at model B, 150, 000 kilometers in diameter, and if you think about it all the way down, you’ll see: It’s a thin ring. The entire bubble is almost vacuumized.
2009–05–08 11:00:28 Liu Cixin
If you don’t want a big vacuum, it has to be your size.
2009–05–08 11:01:07 Tang Feng
Yep. In fact, I feel bad about giving up the Jupiter scale.
A big vacuum space is a drawback, but not enough to back me up. What I would miss most is the loss of the microgravity biosphere. We had to retreat.
2009–05–08 11:03:23 Liu Cixin
Rama is ellipsoid, almost exactly like this.
2009–05–08 11:03:32 Tang Feng
Clark’s more serious than me, okay? I’ve taken the materials into account. So he had to write the subject of Rama himself to be logic self-consistent.
2009–05–08 11:06:52 Liu Cixin
Wait. It is very elastic, Rama can go into the sun, the material is obviously arbitrary.
2009–05–08 11:08:59 Tang Feng
Ha ha, according to what you said, I have regained some confidence. Are you sure you remember correctly? Why would you need plate movement at Lamar’s scale? I don’t remember him writing that myself.
2009–05–08 11:13:54 Liu Cixin
Nothing added. If the scale was 10,000 in diameter, everything would be fine.
Ah, Rama doesn’t have plate movement, which provides a lot of creative resources?
2009–05–08 11:16:44 Tang Feng
Plate movements bring: earthquakes, tsunamis, uneven mineral deposits, uneven topography.
Simplest usage: detonate the extinct volcano below the path that the flying race must pass through, slaughter them like smoked mosquitoes.
2009–05–08 11:20:35 Liu Cixin
Oh, yes, that’s interesting too. Emphasis should also be placed on exploring those natural phenomena peculiar to the non-bubble world on earth, such as the change of gravity, the weightless zone in inner space, the natural form of the weightless poles and so on.
2009–05–08 11:21:13 Tang Feng
And I have a feeling that most fantasy writers can barely cope with these variations and settings.
2009–05–08 11:22:57 Liu Cixin
For example, the weightless axis is an extremely important strategic location because from here an attack can be launched anywhere in the world with minimal force, whereas an attack on the axis from the ground would require overcoming a deep gravitational well.
In addition, opposing continents could attack each other directly, with their trajectory passing through inner space.
2009–05–08 11:25:23 Tang Feng
… Transport can also go through…Oh God. This kind of world war seems all so easy to start.
2009–05–08 11:25:28 Liu Cixin
The war in the bubble world may focus on the struggle for the weightless axis, which is equivalent to the struggle for the poles of weightlessness.
So the world can’t be too small.
2009–05–08 11:26:30 Tang Feng
The interesting thing is that the side with the strategic advantage has a hard time moving into the gravity well.
It’s more balanced.
Guerrillas live forever.
2009–05–08 11:27:29 Liu Cixin
The most dramatic places in the bubble world are the weightless axis and the poles, where natural forms that are different from conventional nature are excellent subjects.
Race is a problem. My advice is not to divide the race, just be the same human beings, otherwise it’s easy to fall into stereotypes.
2009–05–08 11:28:41 Tang Feng
From an astronomical and physical point of view, all of these sources are valid.
From a humanistic point of view, it is also compatible with 600,000 traversals.
It happens every 100 years for 60 million years. A million cubic meters at a time, which works for many fantasy writers.
You are so elitist. Grassroots writers attach great importance to this.
You don’t care.
2009–05–08 11:30:26 Liu Cixin
The authors should take charge of those things, and we just provide a logical platform for imagination.
2009–05–08 11:30:57 Tang Feng
So that’s it.
Official Settings will be released this week.
2009–05–08 11:31:26 Liu Cixin
Ok! All the best!
Other information about Dyson Sphere:
1. Introduction of Dyson Sphere
2. Liu Cixin’s Dyson Sphere Blueprint enter Metaverse
3. Dyson Sphere Volunteer & Ambassador ProgramSocial Media of Dyson Sphere:
Website: https://www.dysonsphere.gg/
Twitter: https://twitter.com/DysonSphereMeta
Medium: https://medium.com/@DysonSphereMeta
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