Unanswered Questions

84 questions with no upvoted or accepted answers
81
votes
0answers
3k views

How soon can the first stars form?

Introduction In our universe, the cosmic microwave background was formed approximately 400,000 years after the Big Bang. It was hot, but within a few million years after the Big Bang, it would no ...
11
votes
2answers
309 views

Weather with extreme seasons

Assuming the axial tilt of the Earth was increased to roughly 30°, and the orbital eccentricity roughly doubled(0.03 as opposed to 0.016) so that the average temperature stayed the same, but the ...
8
votes
1answer
312 views

How do I determine the physical size of a quartz crystal of a given shape and vibrational mode needed to approximate a specific resonant frequency?

So, one of my D&D characters has a cut/relief-carved quartz crystal amulet (medallion shaped) that's both an arcane focus (crystal) and a holy symbol (amulet), and I thought it would be a good ...
7
votes
2answers
159 views

How would huge chunks of floating land soaring the skies really fast affect my world?

My world is composed of a surface and three distinct layers of floating islands sorted by altitude, lets call them Lower, Mid and Upper for convenience. Lower and Upper are composed by medium sized ...
7
votes
0answers
65 views

How to design a humanoid with facultative quadrupedism?

I thought this can be considered the oposite to the monkeys' walk which the most time that are on land are quadrupedals and sometimes they can stand bipedal, so now in this case I'm asking about a ...
7
votes
4answers
148 views

Sustainability of a village of giant creatures

Let's say there is a sapient species around the size of an t-rex, they weigh on average 6000-8000 kg and are omnivores whose diet is mostly composed of plant matter, but with some meat. They are ...
6
votes
0answers
128 views

What blood pigment type is immune to ammonia poisoning?

I am designing a world in which the biological solvent is an ammonia-water mixture and need help finding out which blood pigments (Hemoglobin, Hemocyanin etc.) would be immune to the negative effects ...
5
votes
0answers
58 views

How viable is my model of gapless neurons?

Recently, I have been writing about anatomically plausible superhumans ( a more advanced, stronger, and smarter human species that was artificially created and planted on a terraformed planet similar ...
5
votes
0answers
78 views

Scaling up the bat wing: still a good alternative for a large flying animal or inferior to a pterosaur wing?

My creature is an alien roughly 3 meters tall while standing (roughly 2,5 meters at the shoulders, with arms that can touch the ground while standing upright) and weights roughly 220 kg (roughly 485 ...
5
votes
0answers
136 views

How would a humanoid be affected by its quadrupedal-style arms?

Humans have horizontal shoulders. We can do all kinds of stuff with them, but what would it be like if we had vertical shoulders like a quadrupedal animal, specifically, a cat? What movements could ...
5
votes
0answers
157 views

Is my topology/are my climate zones alright?

This is my first try at worldbuilding, and I need some feedback. I've filled in what I hope are realistic climate zones, ocean currents and topology for this current state of the world, all done in ...
5
votes
1answer
140 views

How much further could ship-based radar see on a flat world?

On our spherical planet, it is highly advantageous for modern navies to have airborne radar, because it can seem much further than even the best ship-based radar, simply due to the greater distance to ...
4
votes
0answers
81 views

How much I can change the humanoid body plan and still be able to perform the high speed throwing?

Why keep the humanoid body plan?, which is the advantage of the humanoid shape? This were my principal questions when I was wondering about the features of different fictional specie, so I reached to ...
4
votes
0answers
61 views

What should an inactive planet's topology be for nutrient circulation?

I'm trying to engineer an Earth mass planet built initially out of pure silicon dioxide (silica). So basically, imagine a glass sphere slightly larger than Earth somewhere in the Goldilocks zone, ...
4
votes
0answers
109 views

In the orthogonal series, when finding the 4-force between two charges would the entire world line of each need to be taken into account?

Four-Velocity is the derivative of four-position with respect to proper time, four-acceleration is the derivative of four-velocity with respect to proper time, and four-force is equal to rest mass ...

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