Questions tagged [physics]

For questions regarding the physics relevant to fictitious worlds. General physics may be off-topic.

7 questions with no upvoted or accepted answers
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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, ...
5
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132 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 ...
4
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0answers
108 views

Could a universe with 3 or more $U(1)$ charges that are all equivalent to each other be self consistent?

In alternate universe there are at least 3 $U(1)$ charges. An elementary fermion can have a value of $±1$, or $0$ for any of these types of charge. The value an elementary fermion has for one of ...
3
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0answers
70 views

Visual gravitational effect of cosmic string network on background light

A scientific paper last year proposed the idea of cosmic string life-forms which could flourish within stars. The basic idea is that cosmic strings,theoretical topological defects from the early ...
2
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0answers
49 views

How thick does a layer of spider silk need to be to stop these calibers of bullets from passing through?

Exactly what it says on the tin: how thick would a layer of spider silk need to be to stop each of the following bullets from passing through? .22 Short .32 ACP .380 ACP 9×19mm Parabellum .45 ACP ...
1
vote
3answers
131 views

What's a practical use for a gravity based magic system?

My magic system operates thusly - Using some kind of material, probably a special clay, maybe it's been changed by some kind of process, a magic user can shape the clay into balls of varying sizes, ...
0
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0answers
63 views

Can I make a functional wingsail out of pre-industrial materials?

Definition of a wingsail, from Wikipedia: A wingsail, twin-skin sail or double skin sail is a variable-camber aerodynamic structure that is fitted to a marine vessel in place of conventional sails. ...