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Q&A

Posts tagged materials

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Q&A PVA glue curing process

What happens when PVA glue sets? I am curious about the white PVA glue that is commonly used for bonding wood and paper. Although an Internet search find lots of articles they mostly seem to be ne...

1 answer  ·  posted 4mo ago by chris-barry‭  ·  last activity 3mo ago by James McLellan‭

Question materials
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Q&A How efficient can a Dyson sphere be?

The shell variant of a Dyson sphere consists of an artificially-made shell of material about 1 AU in radius encircling a star. The sphere captures most of the star's energy and stores it for future...

1 answer  ·  posted 2y ago by HDE 226868‭  ·  last activity 2y ago by celtschk‭

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Q&A Sanity Check : Utility Fog

Inspired by many questions that make use of utility fog. Utility fogs are not, as the name might suggest, fogs, but rather lattice solids. Cells of the foam are pollen-like micrometer-scale mach...

1 answer  ·  posted 3y ago by James McLellan‭  ·  edited 2y ago by Canina‭

Question materials
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Q&A Scources for metastable Metallic Hydrogen

Recently I've been looking into Metallic Hydrogen as a fuel for the vehicles of my fictional future world. The only issue is that I'm uncertain if the blasted stuff is metastable. And while I kno...

2 answers  ·  posted 3y ago by Seraphim‭  ·  last activity 2y ago by Seraphim‭

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Q&A A clothing material or other method to slow free-fall descent down walls

I'm working on a military sci-fi piece that involves a lot of exo-skeleton enhanced, well, parkour -- for lack of a better term -- and was wondering how to deal with descents from great heights. ...

23 answers  ·  posted 2y ago by Delirium‭  ·  last activity 2y ago by Delirium‭

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Q&A How long can a wooden door last?

The setting I've cooked up for a D&amp;D campaign I'm running features a fair amount of buildings that have been totally abandoned by civilization for hundreds or even a thousand years. Obviously w...

2 answers  ·  posted 3y ago by Dylan B‭  ·  last activity 3y ago by Dylan B‭

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Q&A Could yet unobserved baryons constitute useful building materials?

The setting is a science fiction story set roughly 500 years in the future. Looking at Wikipedia, I see a number of baryons that have so far never been observed. I'm interested in exploring this s...

4 answers  ·  posted 3y ago by Vincent‭  ·  last activity 3y ago by Vincent‭

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Q&A Durability of materials in ideal conditions

How long can objects made of hard material last at room temperature in otherwise ideal conditions? If left outdoors on Earth, over the course of millions of years, any material will be eroded by w...

2 answers  ·  posted 3y ago by rwallace‭  ·  last activity 3y ago by rwallace‭

Question time materials
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Q&A Mechanics and structure for an artificial giant creature?

I originally wanted to create giant land biological life-forms but the square cube law is limiting me to sauropod body sized creatures so another element of my story is artificially enhanced biolog...

1 answer  ·  posted 3y ago by RandySavage‭  ·  last activity 3y ago by RandySavage‭

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Q&A Could a Greater Relative Abundance of Tin Extend a Bronze Age?

Bronze is an alloy of copper and tin, and copper is a significantly more abundant metal in the Earth's Crust, at about 70 PPM compared to tin at 2 PPM. Because tin was the limiting factor in bro...

1 answer  ·  posted 3y ago by NixonCranium‭  ·  last activity 3y ago by NixonCranium‭

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Q&A How can Degenerate Matter be stored?

In multiple sci-fi, Degenerate Matter is often used for a myriad of applications. Degenerate Matter consists of Neutronium, Quarkonium and other matter coming from dense stars. They have high stren...

4 answers  ·  posted 3y ago by CYCLOPSCORE‭  ·  last activity 3y ago by CYCLOPSCORE‭

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Q&A 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&amp;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 ...

1 answer  ·  posted 3y ago by Shalvenay‭  ·  last activity 3y ago by Shalvenay‭

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Q&A Post-apocalyptic aircraft

I have a post-apocalyptic scenario, set in the ruins of an American metropolis with flooded streets. Boats are used most of the time, but aircrafts have advantages, for battle or if you have to get...

2 answers  ·  posted 3y ago by Cee Mon‭  ·  last activity 3y ago by Cee Mon‭

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Q&A Ideal Materials for Laser / Energy Weapon Defense

In most future sci-fi settings, it is apparent that laser weapons (or as Star Wars likes to call it, blasters) and energy weapons in general would have replaced most standard ballistics for main in...

2 answers  ·  posted 3y ago by CYCLOPSCORE‭  ·  last activity 3y ago by CYCLOPSCORE‭

Question armors materials
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Q&A What would be best way to re-melt Mars' mantle and core to revive its magnetosphere

Missing magnetosphere on Mars keeps popping up. Most likely caused by Mars core being cold, mantle not bubbly enough. Mars mantle is dormant, core does not move. What would be good way to get it g...

24 answers  ·  posted 8y ago by Peter M. - stands for Monica‭  ·  last activity 3y ago by Peter M. - stands for Monica‭

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Q&A Reasons a fictitious metal is really hard to refine?

For my story there exists a fictitious element with special properties. In its pure form is most closely resembles metal (for its physical properties) This material is quite abundant in salt and o...

20 answers  ·  posted 3y ago by Hyfnae‭  ·  last activity 3y ago by Hyfnae‭

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Q&A Can you replace goethite with something else in limpet teeth to decrease its density and maintain its strength?

The limpet teeth's microscopic structure is analogous to man-made short-fiber composites. Its strength depends on the direction of the force, relative to the orientation of the fibers. https://www...

1 answer  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

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Q&A Maximum Size Limit for a Wooden-and-Bamboo Neo-Ziggurat

There is a concern that's been brought up only recently--steel and concrete buildings are environmentally wasteful. In further clarification, they waste away too much greenhouse gases. And consid...

3 answers  ·  posted 3y ago by JohnWDailey‭  ·  last activity 3y ago by JohnWDailey‭

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Q&A Substance that changes quickly from liquid/gelatinous to solid?

Question: does a liquid or gelatinous substance exist that once outside a body could solidify and be hard enough to be used once as a tool? The setting is low fantasy without magic, yet with creat...

13 answers  ·  posted 3y ago by TinyTinkerWorkshop‭  ·  last activity 3y ago by TinyTinkerWorkshop‭

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Q&A Turning iron that is unusable by magic civilizations into an alloy usable by them

While my setting has magic, the material world acts the same way as ours. Only reason why I am mentioning magic in my question is because I'm explaining why I need to satisfy such an odd set of req...

2 answers  ·  posted 3y ago by Failus Maximus‭  ·  last activity 3y ago by Failus Maximus‭

Question metals materials
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Q&A What do you make bricks out of in the rainforest?

Problem statement There exists a thriving Bronze Age civilization in a gigantic rainforest, bigger than the Amazon and Congo put together. This civilization is built in on the flood plains of a mi...

7 answers  ·  posted 4y ago by kingledion‭  ·  last activity 3y ago by kingledion‭

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Q&A What environmental conditions would create compounds not found on earth?

My world is spread across thousands of planets in thousands of star systems, with a sort of United Nations (of Planets) acting as intermediary to ensure peace and prosperity between the planets. E...

6 answers  ·  posted 3y ago by TheEnvironmentalist‭  ·  last activity 3y ago by TheEnvironmentalist‭

Question trade materials
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Q&A Densest practical packing of protons vs. neutrons?

For background: I have some sci-fi technology based on sci-fi physics which depends on some fictional forces that interact differently with up quarks vs. down quarks. So, to get certain types of ef...

1 answer  ·  posted 3y ago by Logan R. Kearsley‭  ·  last activity 3y ago by Logan R. Kearsley‭

Question physics materials
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Q&A How to ride a fish?

In my world, there are giant fish, reptiles, and bugs. My question is, how would you be able to put a harness or saddle on a fish? Info: Swamp bio being ridden by humans Fish range in all differ...

4 answers  ·  posted 3y ago by BloodyNightStalker‭  ·  last activity 3y ago by BloodyNightStalker‭

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Q&A Does adamantium solve the giant mecha problem?

When the giant aliens came lumbering out of the interdimensional fissure, we fought back, building giant robots of our own... which promptly collapsed onto themselves and were unable to move becaus...

5 answers  ·  posted 3y ago by Stephen‭  ·  last activity 3y ago by Stephen‭

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Q&A Clear Waterproof Material in the Dark Ages

A traveling scholar during the Dark Ages, with full knowledge of how precious books were, decided to keep his rolled up in a scroll. He's fashioned a clever case for it that allows him to turn a no...

2 answers  ·  posted 3y ago by Halfthawed‭  ·  last activity 3y ago by Halfthawed‭

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Q&A Is there a material or method to allow "swimmable" coins?

I want to know whether there is a way to make coins that are "swimmable" in the fashion of Scrooge McDuck. My inquiry is based off this Family Guy meme from Pinterest The coins don't necessari...

15 answers  ·  posted 3y ago by Li Jun‭  ·  last activity 3y ago by Li Jun‭

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Q&A Cheapest material per ton on earth?

What is the cheapest material per ton that one could purchase on our Earth in the 21st century? This could also include the cheapest material per ton to harvest so dirt may seem like the obvious an...

4 answers  ·  posted 3y ago by CodeCamper‭  ·  last activity 3y ago by CodeCamper‭

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Q&A is there a way to make water armor and condense the water?

i want to make an armor made of liquid, for example like dew accumulate and attached to the person or just dip into water and the water attached/carried on (just example), but it also condense the ...

2 answers  ·  posted 3y ago by Li Jun‭  ·  last activity 3y ago by Li Jun‭

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Q&A Could a material exist that is glass-like on the outside but spongy on the inside?

In my DND world, I've established that there is a substance that has these properties: It is made from a chalky "dust" that can be mined The dust gets mixed with unspecified chemicals to create a...

3 answers  ·  posted 3y ago by Kristen Hammack‭  ·  last activity 3y ago by Kristen Hammack‭

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Q&A Super insulated box/room to store extreme heat possible?

Is it possible in 21st century Earth for someone to create a small super insulated box to store heat like an "anti-freezer" such as putting lava inside the box and the box not being hot to the touc...

5 answers  ·  posted 3y ago by CodeCamper‭  ·  last activity 3y ago by CodeCamper‭

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Q&A Realistic "Titan hardening" for living creatures: what's the hardest substance a biological process can produce?

SPOILERS FOR ATTACK ON TITAN, READ AT YOUR OWN RISK... Hardening, or Titan hardening is an ability posessed by certain types of titans in the anime Attack on Titan. Since the setting has rifles ...

4 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

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Q&A what essential material or ingredients in modern gunpowder that if changed to be expensive or rare, can ruin the evolution of advance/modern gun?

as the title, what materials or ingredients in modern gunpowder that if change to be expensive or rare to get, can ruin the evolution of advance gun or can turn modern gun obsolete or undesirable ?...

1 answer  ·  posted 3y ago by Li Jun‭  ·  last activity 3y ago by Li Jun‭

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Q&A what would it need to create indestructible bubble?

Not exactly indestructible, at least after flying to certain height it may pop out. I mean something like the bubble is as hard as stone or steel but still elastic and light to float like bubble, ...

2 answers  ·  posted 3y ago by Li Jun‭  ·  last activity 3y ago by Li Jun‭

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Q&A How strong is my hellstone, if about half a mile in diameter pillars of hellstone hold up about a mile of Earth above it?

The pillars are spread out about a mile apart each, and they all come straight from the ground, slowly gets just a smidge smaller in the middle, and then get bigger near the top, reaching a height ...

2 answers  ·  posted 3y ago by michael griffin‭  ·  last activity 3y ago by michael griffin‭

Question physics materials
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Q&A Could a "bouncy planet" work in principle?

Would it be possible to have a planet created by a God - but still obeying the known laws of physics - to have a bouncy surface that would be strong enough to bounce any large incoming matter, like...

2 answers  ·  posted 3y ago by Snowshard‭  ·  last activity 3y ago by Snowshard‭

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Q&A Is it possible to surf on molasses?

I recently came into possession of a rather large mass of molasses due to a misunderstood Alexa inquiry and since the restocking fee is outrageous, I plan on using it to answer a nagging question I...

3 answers  ·  posted 3y ago by Glen Pierce‭  ·  last activity 3y ago by Glen Pierce‭

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Q&A Practicality of a ship-sized twisted-rubber engine

I was considering this answer I wrote: https://worldbuilding.stackexchange.com/a/21374/75 It got me to wondering... if we had a flying sailing ship with a twisted-rubber energy storage device that...

2 answers  ·  posted 3y ago by Monty Wild‭  ·  last activity 3y ago by Monty Wild‭

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Q&A What would be the condition of a wood cottage that has been abandoned for ~20 years?

Suppose a two-storey timber cottage has been left unoccupied for 15 to 20 years. The entire structure is wooden, including all beams and supports, with a rammed earth foundation. It's situated with...

4 answers  ·  posted 3y ago by bashful‭  ·  last activity 3y ago by bashful‭

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Q&A UTH Ceramic Bones/Exoskeleton?

Why and how could an organism evolve to make its bones or exoskeleton out of a UTH (Ultra High Temperature) ceramic like TiB2, WC, B4C, or TaHfC? Is it even possible?

2 answers  ·  posted 3y ago by Aezyc‭  ·  last activity 3y ago by Aezyc‭

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Q&A Building a bridge to the stars

Could I, purely in quantity of material only, build a solid bridge to a star? Ignore anything like strength, relative motions of systems, that is all taken care of, using lalalaicanthearyouium - t...

8 answers  ·  posted 7y ago by Whelkaholism‭  ·  last activity 3y ago by Whelkaholism‭

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Q&A Human colonies beyond Pluto (on a potential ninth planet)

To be able to colonize another world, there are some requirements; the harvesting of energy, enough recourses, handling of the environment (pressure, temperature and gravity and so on) and availabi...

4 answers  ·  posted 3y ago by Tim Hansen‭  ·  last activity 3y ago by Tim Hansen‭

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Q&A How big could dinosaurs get with super strength and durability?

On this parallel earth all vertebrates received the ability to efficiently produce super strong materials from readily available minerals/nutrients in the mid Triassic. The specifics of these comp...

2 answers  ·  posted 3y ago by Vakus Drake‭  ·  last activity 3y ago by Vakus Drake‭

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Q&A What can prevent a super elevator to a space station from being invented?

Let's say that space around earth has no debris. Super elevator is some super durable cable between a space station and earth by which some elevator can travel. Space station is in geostationary or...

2 answers  ·  posted 3y ago by Erumaru‭  ·  last activity 3y ago by Erumaru‭

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Q&A Is it possible to build long-lived macro-scale structures out of non-atomic substances?

A staple of science fiction is substances like 'durasteel' or 'tritanium', which, through generally unexplained means, have vastly superior material qualities when compared to conventional material...

5 answers  ·  posted 7y ago by ckersch‭  ·  last activity 3y ago by ckersch‭

Question materials
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Q&A Natural Armour and Weapons

In my fantasy world, the magic system pretty much makes metal armour and weapons obsolete. The magic system's specifics aren't important, just note that the magic system allows the users to 'penetr...

15 answers  ·  posted 3y ago by Uncertainty‭  ·  last activity 3y ago by Uncertainty‭

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Q&A What would self-repairing armor be made of?

My question is, how can, say, a spacecraft have self repairing armor? It works using three layers: Delicate computers and people inside, armor repair system surrounding that, and then the armor its...

8 answers  ·  posted 7y ago by PyRulez‭  ·  last activity 3y ago by PyRulez‭

Question armors materials
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Q&A How might dragon remains be turned into a jewel?

Background: I have typical dragons: Huge, scaly, winged, and fire-breathing. I also have dragon magic, but I'd prefer answers not to draw on this too much. In my world, a planet similar to earth, ...

7 answers  ·  posted 3y ago by NadiraSpzirglas‭  ·  last activity 3y ago by NadiraSpzirglas‭

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Q&A What is the highest level of accuracy in motion control a Victorian society could achieve?

In my late-Victorian world high-precision clockwork is highly available, but I am having trouble finding out exactly how precise their work could be. I have done some research on the subject, but ...

4 answers  ·  posted 3y ago by A Lambent Eye‭  ·  last activity 3y ago by A Lambent Eye‭

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Q&A What are some of the expected properties of metallic glasses and some steps to create them? (Explain Like I'm 10)

I'm currently bouncing around ideas for a sci-fi / cyberpunk world and one of the major technologies in this universe is the manufacture and usage of metallic glass. I don't want to handwave too ...

5 answers  ·  posted 3y ago by Sans The pungeon master‭  ·  last activity 3y ago by Sans The pungeon master‭

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