Questions tagged [materials]

Intended to refer to the properties of both hypothetical and real materials and their applications and properties.

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3
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4answers
156 views

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 strength,...
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4answers
417 views

Sword that is limp when in sheath, and hard when drawn?

I want to create a sword that when sheathed remains limp/flexible or soft but upon being unsheathed it become hard like common steel. So, something like the sword going soft when not exposed to ...
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0answers
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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 ...
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2answers
609 views

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 on ...
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2answers
107 views

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 ...
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23answers
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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 ...
16
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20answers
8k views

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 ...
7
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1answer
137 views

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....
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2answers
94 views

False Teeth Made of Obsidian?

How feasible would a set of false teeth made of obsidian be? Assume technology has to be no more advanced than the mid 1800s. If implausible for full time use, would such a set be practical enough to ...
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1answer
93 views

Uses of common and cheap diamonds [closed]

Inspired by this question, I've wondered how it would world look, if those diamond berries were real. Let's assume in my fantasy world of XVII/XVIII IRL technology have one species of plant that have ...
5
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3answers
140 views

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 ...
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13answers
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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 ...
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2answers
211 views

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 ...
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7answers
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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 ...
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6answers
125 views

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. Each ...
5
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2answers
126 views

Is there a good non-reactive metal alloy for gun making?

So, due to reasons magical, civilization has aversion towards metals which are above antimony in reactivity series. Yet, that doesn't stop them from developing gunpowder and wooden cannons. But while ...
4
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1answer
77 views

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 ...
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6answers
3k views

What is the largest / longest practical bronze age sword possible?

Assuming bronze age technology and the use of bronze for the blade, what is the longest blade / total length of sword that is possible and practical to use? Bronze age Naue II swords were typically ...
14
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4answers
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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 different ...
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5answers
6k views

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 because ...
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2answers
173 views

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 nob ...
3
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2answers
108 views

Problems With CNTs and Graphene That Must Be Dealt With Before Using Them to Build Tall Buildings Out of THem [closed]

Buildings of steel and concrete are in big trouble. The building's steel bones rust when exposed to moisture. When rusting occurs, the steel expands. If the steel rusts from inside a concrete shell,...
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15answers
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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 necessarily ...
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4answers
358 views

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 ...
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2answers
195 views

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 ...
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3answers
222 views

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 ...
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5answers
137 views

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 touch ...
3
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4answers
303 views

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 and ...
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2answers
535 views

What material should a mjolnir type weapon be made out of?

In this question we came up with a weapon that would be quite powerful if it could have variable weight and inertia. In the comments of the accepted answer a user pointed out that we basically ...
2
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1answer
120 views

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 ? i ...
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2answers
245 views

Is there a scientific way to make a metal that can pass through other metals?

I want to create a sword that can pass through an opponent's weapon/armor (mostly made of metal like steel/iron, bronze, copper, lead, silver, gold, etc) like it was ethereal or hologram thing upon ...
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2answers
124 views

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, and ...
6
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2answers
137 views

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 of ...
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2answers
136 views

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 ...
3
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2answers
106 views

How much data storage is needed for a blueprint used by a replicator?

I have the idea of using a material that's used in producing blueprints for replicators, due to their high data storage for the properties of the object (such as the formation and state of its ...
5
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1answer
224 views

How does 1963 science work with 2013 materials?

This question reminded me of a Nanowrimo attempt of mine a few years ago. Main Character is bicycling in modern day (2013 at the time), and creates a time-portal, finds herself in 1963 near Xavier's ...
9
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3answers
149 views

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've ...
12
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5answers
3k views

Is it possible to build an escalator without iron, with 16th century technology?

Escalators, from what I've seen, were created in 1891 using iron. However, with the way they collapse into themselves, is it even possible to make an escalator using technology from the 16th century, ...
4
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2answers
185 views

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 ...
23
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15answers
9k views

A steel-cutting sword?

So within my world there exists a faction of monks on a secluded mountain whose scientific and philosophical knowledge outstrips the outside medieval world. And with these monks being famous more for ...
4
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6answers
2k views

Is elastic wiring feasable?

Since wireless does not seem to be the ultra-high-broadband solution of the future (according to recent 5G cellular network results), wires seem the only way to go for a data-intensive future. The ...
11
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4answers
303 views

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 within ...
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2answers
76 views

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?
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8answers
6k views

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 - this ...
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4answers
164 views

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 ...
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2answers
79 views

What would be common simple materials for tools in a large-scale archipelago?

For this, I mean such materials as obsidian or other materials that fracture into sharp edges easily, or can be fashioned into them easily. I'm trying to come up with basic tools for the local tribal ...
3
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2answers
172 views

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 ...
6
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7answers
268 views

How to get raw materials from a water based world?

I am developing setting for a dnd campaign I like to run next year. Its takes influences from Xenoblade 2, where people live on or inside humongous creatures while the entirety of the world is an ...
1
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2answers
371 views

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 orbit,...
31
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26answers
16k views

How to make female breast armor viable?

It is known that armor with accentuated design for breast is a bad choice in an actual confrontation. What can be changed to make "breast armor" more effective? Like materials(fictional or not), ...

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