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Questions tagged [invisibility]

For questions on living beings and objects that cannot be seen.

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12 votes
9 answers
2k views

How would a creature adapted to life in a completely dark environment also have the ability to change its skin pattern like an octopus?

I'm in a bit of a pickle - I've designed a monster for a horror novel I'm working on, but I've added too many characteristics that I like for it to make logical sense. One of these features is that ...
Graham Payton's user avatar
4 votes
3 answers
173 views

Footwear for my invisible fantasy race

My setting (urban fantasy set in 1998 America) has a variation on the classic movie monster of the "invisible man". Here this species (tentatively called the neverthere) has a physical body ...
Cyrus Drake's user avatar
  • 8,165
0 votes
2 answers
1k views

Where could spirits like ghosts and demons be visible in the electromagnetic spectrum? And how would they be able to do this? [closed]

Heiiii my first question here! Right so I'm writing my story and I was going to make the spirit beings just turn invisible (just classic spirit stuff you know) But after reading in this website a fair ...
Kringle_Kryptid's user avatar
10 votes
7 answers
3k views

What would an alien spaceship need to have to be undetectable to us with our current technology

This alien spacecraft would be orbiting around earth at 300-400 km, it has a similar size to the ISS, and it has to be undetectable with our current technology. I assume that it would prevent emitting ...
spaceamoeba1010's user avatar
5 votes
6 answers
382 views

Invisibility versus transparency. What is possible with plausible advanced technology?

Correct me if I'm wrong but I think science fiction often confuses invisibility with transparency. Even if somehow we could make a human being transparent, this wouldn't make them invisible, any more ...
chasly - supports Monica's user avatar
6 votes
7 answers
1k views

How can people procreate when the medieval period is cursed with invisibility? [closed]

Set in the medieval time, overnight a giant meteorite strikes the pacific ocean and then a bright green glow sweeps the entire globe turning all human invisible to mammalian sight! Note that this is ...
user6760's user avatar
  • 48k
4 votes
2 answers
524 views

Would civilization collapse if everyone becomes invisible to one another?

Set in the modern day, a meteorite lands in the pacific ocean and green flash of light sweep the entire globe. All of a sudden we are blinded to the presence of another human being, it seems that the ...
user6760's user avatar
  • 48k
24 votes
19 answers
9k views

Why would an invisible personal shield be necessary?

I’m trying to think of a reason why an advanced civilization would find it useful to invent an invisible handheld shield as protection against a civilization with primitive weaponry (sticks, stones, ...
Y Mi's user avatar
  • 377
-1 votes
5 answers
2k views

How can an invisible person make their clothing invisible too? [closed]

[This question is based purely on curiosity. Unexplained versions of this kind of thing happen in films/books/etc., and I’d like to know if it’s at all plausible, or whether handwaving is the only ...
user_629957's user avatar
  • 4,307
2 votes
2 answers
326 views

What's the plausibility of making a body part invisible?

I have a humanoid character with wings, made possible by a little fictional magic, but I'm trying to keep it as scientifically correct as I can. All right, so she has wings, but walking through busy ...
Rasul's user avatar
  • 187
34 votes
22 answers
13k views

How to prevent invisible people from committing crimes?

The year is 2020, 98% of the world population are normal people with normal skills, two percent (2%) are people who have the ability to become invisible at will. The majority of the invisible people ...
Gustavo Gabriel's user avatar
1 vote
3 answers
471 views

Changing the emission spectrum of the human body

Let's say I'm a superhero or a magic space-wizard with the ability to change the color of any object I touch i.e. change what wavelengths of light it emits. If I want to become invisible, I could then ...
Z.Schroeder's user avatar
  • 11.3k
24 votes
2 answers
9k views

Would Vantablack hide planes from radar?

Vantablack is very dark, absorbing 99.965% of light. I've also heard it absorbs waves beyond the visible spectrum. Does this mean planes painted with Vantablack would be invisible to radar? If yes, ...
Mirror318's user avatar
  • 3,809
30 votes
7 answers
4k views

What does a person in a light-bending invisibility cloak look like from behind?

So, yesterday I found an invisibility cloak in my attic. It's got an instruction manual with it, and there it was mentioned that it is truly an invisibility cloak: it bends the light (actually, all ...
subrunner's user avatar
  • 4,572
1 vote
6 answers
464 views

Why can't you attack while invisible? [closed]

In many sci-fi/fantasy settings, there are cloaking devices and invisibility spells that render the user invisible. However, they usually have the limitation, frequently for game-balancing purposes, ...
Milo P's user avatar
  • 129
3 votes
2 answers
290 views

What would a orbital station and activity look like from the ground?

The Setup: We have a highly advanced orbital station. It is designed to be rather stealthy, like a observation post. Is it possible to make it completely invisible to the naked eye, even when in low-...
user avatar
6 votes
7 answers
2k views

How can we catch an invisible man?

Some Background The government is really, really good at catching people as we learned here and here. But as logic would dictate, there is always someone better. In this case, an invisible man. ...
TrEs-2b's user avatar
  • 56.2k
7 votes
7 answers
775 views

Is it scientifically possible to make a robot invisible to the naked eye?

Under currently known science, is it possible to make a robot of which every part was either made of a clear, non-reflective material (such as bulletproof glass, or plastic), or too small or thin to ...
user24353's user avatar
  • 405
10 votes
4 answers
2k views

What would the culture and traditions of "invisible" people look like?

Imagine a group of people with an "invisibility" power that make them unnoticed and immediately forgotten by everyone. This power would be a mix of the witches spell in "His Dark Materials" and the ...
Babika Babaka's user avatar
3 votes
3 answers
258 views

Evolution of a naturally invisible prey

I'd like to tip my hat to this week's fortnightly challenge with this question by revisiting an old one. I asked a question about the Science behind a naturally invisible creature a while ago. At the ...
Frostfyre's user avatar
  • 25.2k
3 votes
2 answers
401 views

Evolution of a naturally invisible predator

I'd like to tip my hat to this week's fortnightly challenge with this question by revisiting an old one. I asked a question about the Science behind a naturally invisible creature a while ago. At the ...
Frostfyre's user avatar
  • 25.2k
150 votes
17 answers
15k views

A Most Subtle Magic

Rynn is not flashy at all. In fact, you would be forgiven to think she's a bit of an introvert. Sure, the people in the town are strangely reluctant to talk to you about her, but you are a newcomer, ...
Serban Tanasa's user avatar
7 votes
3 answers
462 views

How to make an invisible planet from its stratosphere up?

Is there a way to make a planet invisible naturaly? I dont want the entire thing to be clear, but have a natural "field" or something that prevents the planet from being seen (or makes it much harder) ...
The Man's user avatar
  • 1,869
6 votes
3 answers
565 views

What technologies could allow for individual scale invisibility and what are their caveats?

In a science-based futuristic world, individuals (soldiers) are able to become invisible to the human eye while keeping a decent amount of agility. What could be the different possible technologies ...
Sheraff's user avatar
  • 12.5k
32 votes
7 answers
4k views

Are invisible creatures theoretically possible?

Would it be possible for a corporeal alien with a solid physical body (it must be able to touch and interact with the world) to exist but remain invisible to humans? My understanding of optics is ...
JessWelch's user avatar
  • 707