Questions tagged [vision]

For questions about the ability to see or a similar sense.

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7
votes
5answers
163 views

Why would a blind creature evolve display features?

I'm thinking of a predatory creature that lives deep inside large caves. Because this environment is so dark, the creature's eyes have disappeared through evolution since the creature relies on ...
9
votes
7answers
3k views

How to evolve human-like eyes that can stare at the sun without protection?

Imagine a species that is very much like humans in shape, size and physiology. But they are able to stare at the sun for long periods without suffering any harm, and without needing any artificial ...
9
votes
3answers
440 views

How large would a circular wall need to be to appear straight?

How large (in terms of height and radius) would an outdoor circular wall (like a city wall on a colossal scale) need to be before a casual observer would perceive the wall as "straight"? I found "...
42
votes
19answers
8k views

How to get cool night-vision without lame drawbacks?

In this scenario, I would like to focus specifically on humanoids (read: human shaped blinking eyes, protected by eye-lashes and evolved in a waterless environment and fitting human eyesockets, from ...
30
votes
10answers
6k views

Non-aqueous eyes?

I am trying to create an organism that can survive in space for short periods, but I realized that I can't have its eyes be similar to those of most animals and humans because they would boil in space....
1
vote
5answers
360 views

Could a camera on a sniper rifle see the kill? [closed]

We are in the a slightly gritty future. There is space travel, but technology is reasonable. People still shoot bullets and not lasers. Vehicles are powered by nuclear reactors and not magic space ...
33
votes
13answers
7k views

What does the view outside my ship traveling at light speed look like?

World Rules: Travelers are able to move at the speed of light without disruption of their lives. Time passes "normally" for them. They think, breathe, love, cry, and steer the ship as if they were ...
6
votes
3answers
247 views

What would a car look like for an animal with eyes on the side of their heads?

Imagine an animal like a cow in regards to eye positioning; they can look forward to lessen their frontal blindspot a bit but assume that doing that for a prolonged amount of time is straining. What ...
8
votes
3answers
539 views

Would color changing eyes affect vision?

I am writing a medieval fantasy story in which there is a race of humanoids who have multicolored eyes. Their eyes may change to bring out one color or another if they are experiencing very stressful/...
39
votes
22answers
9k views

What would be the ideal power source for a cybernetic eye?

After nearly a decade of development and public prototypes, the Mizaru company is ready to unveil the cybereye. A fully cybernetic eye that provides its user/host with high definition vision, enhanced ...
18
votes
14answers
2k views

Would an alien lifeform be able to achieve space travel if lacking in vision?

Think of this alien life form as something resembling earth bats, placed in a planet with Earth-like conditions. Micro-bats have small and poorly developed eyes. Similarly, this alien species is ...
7
votes
4answers
682 views

How fast would a person need to move to trick the eye?

Say superheroes in a certain world have somewhat less overpowered abilities. A strong super might be able to lift a few tons, but not stop speeding trains or pick up an entire semi. Unlike the Flash, ...
8
votes
6answers
3k views

How to limit sight distance to 1 km

My country is on the coast and spans deep into the continent. The technology level is before the invention of explosives. 10 years ago with naked eyes, anyone could see further than 10 kilometers away ...
7
votes
5answers
295 views

Describing what the world looks like in UV and IR [closed]

In my world I have introduced two super powers, and both can be accidentally acquired by an otherwise normal human: one is to see infrared and the other is to see ultraviolet. I am aiming to have that ...
9
votes
5answers
1k views

Is a sling a viable ranged weapon option for someone with poor eyesight?

I have a character who is, for lack of a better term, a Monster Hunter. She's physically fit, has a pretty high pain tolerance/is generally pretty durable, and is skilled in various forms of hand-to-...
4
votes
2answers
180 views

Victorian optical sensors?

In my fictional world I would like to have something similar to modern optical sensors for things such as aiming systems, night-vision goggles and automaton vision. The main problem I face is ...
-2
votes
1answer
138 views

Seeing only in IR: Is my hypothesis correct? [closed]

I watched Kyle's Because Science video on The Predator and 1 thing he talked about was IR vision. Here was his argument: If you can see nothing but infrared light, you can only see the ambient ...
7
votes
4answers
360 views

How is infra-vision any good?

Supposing a world like the Underdark, full of civilizations that developed and live their lives completely away from the light of the sun. In the typical D&D type setting, these creatures have ...
5
votes
2answers
294 views

How far can a human see?

I'm asking this question as a reference for use in worldbuilding when developing world size, atmospheric content, or alien optometric abilities (aka, vision). While I'm specifically asking two ...
8
votes
3answers
1k views

Realistic darkvision?

This question is similar to "How would the human eye need to change in order to see in low light without any changes to physical appearance?", including the apsect of change to the human eye, only the ...
25
votes
8answers
5k views

My protagonist can see UV light. What will she be able to see that others can't?

So in my world interdimensional travel produces UV light. However, there are obviously other things which produce UV light/reflect it and look different. Being a non-physics person, can someone ...
8
votes
5answers
347 views

How would eyes that evolved in air differ from our own?

In one of the documentaries he's featured in, Neil deGrasse Tyson talked about the evolution of the eye. https://www.youtube.com/watch?v=4SXHMm5I-68 The part that's always intrigued me is this: ...
6
votes
2answers
149 views

Vision on Titan/Early Earth and the technicalities of a creature seeing in near infrared

I am trying to develop an alien species that could live on Titan and at first I supposed it would be easy with the species being able to use yellow, red and near-infrared wavelengths of light to see. ...
0
votes
4answers
232 views

Proud warrior race with terrible depth perception. How do they look?

I was working on a science fiction story with a variety of alien species. Most of them seemed entertaining and plausible enough, but I got stuck on one particular species that I could use some help on....
1
vote
2answers
143 views

What 3 wavelengths of IR light would be ideal for “Predator Vision”?

Alright, so I'm working on a setting with dwarves in it. I've been thinking that, to make things more interesting, certain clans would have the cone cells in their eyes see infrared light instead of ...
-3
votes
1answer
111 views

Advanced Alien Coloring [closed]

The Mantis Shrimp is a crustacean known for two things: its punch its eyes For this question I will focus on the latter. A theory about the effects of their super vision is that it causes their ...
10
votes
4answers
2k views

How do vampires react to passive UV light sources?

Certain fantasy creatures are extremely sensitive to concentrated UV light. eg modern vampires. They either slowly or rapidly burn up in-front of you when exposed to direct sunlight or modern high ...
6
votes
3answers
197 views

Super Vision In the Dark

I have made this planet for my creatures and it is constantly dark, night or day. No it's not a rogue planet, it's dark because of the 1,000 feet tall autotrophs that suck up all the sunlight and ...
2
votes
1answer
159 views

Dragonfly Goggles

Ahh insects, such fascinating creatures with fascinating traits, but sadly as I have found out most are only available to them and not us thanks to the square cubed law. Maybe the following traits, ...
-1
votes
1answer
84 views

Calculating The Albedo of a Gas Giant With Earth-Like Moon(s) [closed]

How can you determine how bright a gas giant would be, especially if it has inhabited moons with an Earth-like atmosphere?
26
votes
6answers
6k views

How would a creature see with two pupils in each eye?

Currently, I'm creating an alien species with two eyes, but two pupils in each eye. Though I'm not sure how it would affect its vision, whether negatively, positively, or both, so I've been looking ...
6
votes
4answers
318 views

What are the implications of multiple cooperating intelligent species with different spectral ranges for vision?

Suppose you had two intelligent species that came together and built a society or whatever. For the sake of example, we'll call them species A and species B. Species A evolved to see some subset of ...
5
votes
2answers
202 views

What would the impact of 2 suns have on the development of humanoid ocular organs?

How would the human eye have developed differently on a planet with two suns? One sun will be a yellow star functionally the same as Sol and the other will be a red dwarf. The planet will be earth-...
-2
votes
1answer
204 views

How would computer monitors work if we could sense the frequency of light?

Human's abilities to perceive light is quite limited. Essentially, we have three type of light sensors that each give a linear signal, and if two different light sources give the same signals they ...
12
votes
2answers
544 views

What would be different if a person has broader visual spectrum than normal

[Note: this question was posted on Sandbox] What would be differently perceived from a person with broader visual spectrum than normal? So I've seen this question, especially the accepted answer, ...
2
votes
4answers
431 views

Could a land predator naturally evolve active night-vision?

By active night-vision I mean that it emits light in a wavelength other animals can't see, but it can perceive that wavelength, so it can see even in zero-light conditions. Being able to emit light ...
11
votes
6answers
554 views

Are echolocation rifle “sights” feasible?

Situation A species lives on a planet with heavy fog, and as such, they rely on a conjunction of hearing, smell, and sight. The fog only allows for vision at 500 feet (~152 meters) . They have basic ...
-1
votes
1answer
104 views

How could a known species evolve their vision to have zoom and how would that affect their life? [closed]

How could humans (or some other animal species) evolve their eyes in that way, that they have the visual ability to "zoom"? The conditions are Earth like, and we are talking about known species. What ...
7
votes
3answers
636 views

How would the human eye need to change in order to see in low light without any changes to physical appearance?

In my world there are humans who have undergone a mutation from being exposed to a certain kind of magic. They have not realized they have been mutated until they start noticing that they have the ...
8
votes
2answers
335 views

Would having larger pupils allow elves to see better in the dark?

In my setting elves can see very well in the dark. I've suggested tapetum lucidim but that would make their vision less clear so would larger pupils make it easier to see in low light areas?
6
votes
1answer
548 views

Could elves realistically have tapetum lucidum?

I know that certain animals have the ability to see in darker areas but not in pitch black due to a special ability they have in their eyes which also gives them that glowing effect. Could elves have ...
1
vote
1answer
203 views

View the past by reflection? [duplicate]

I want to postulate that I have a sort of "time machine" that uses reflections from nearest planets to image places on Earth at a time in the past (2 x distance of reflector in light years). Is this ...
4
votes
3answers
280 views

Relationship Between Eye Color and Color of Sun

Does anyone know what the relationship is between the range of likely eye colors in animals and the color of the sun on a given alien planet? For example, on Earth we primarily see browns, greens, ...
6
votes
1answer
127 views

How would eyes, pupils and camouflage evolve if the sun was stationary near the horizon?

Basically I'm considering the physiology of eyes and camouflage might look like on an eyeball planet; tidally locked to the sun so the sun is stationary in the sky. At any point on the habitable ...
-2
votes
1answer
262 views

How would vision be distorted if gravity was 178 000 times higher on earth's surface? [closed]

Ignore any other effect on earth; I'm only curious about how much and in what way gravity's affect on the light would distort what is seen by the eye. :)
30
votes
5answers
3k views

Would aliens with different visual perception be able to read our screens?

In this photography stack exchange question about why we encode pictures in RGB, several answers talk about the fact that our visual receptors are trichromatic, which is the inspiration for the RGB ...
-1
votes
2answers
180 views

Realistic 3D vision in our usual space-time [closed]

Humans, animals and various devices only have 2D vision: that is, we see a 2D projection of light reflected from various 3D objects in the direction of our eyes (and processed by our brains). I would ...
0
votes
3answers
222 views

How would society be different if people could see the full range of the electromagnetic spectrum? [closed]

Say that you have a species whose eyes can see anything from radio waves to gamma waves. Let's assume that it's adapted well enough that it can differentiate between these types of waves, and that ...
3
votes
3answers
144 views

Confusing predators with reflected or refracted sunlight

Imagine a large butterfly- or moth-like creature, with a wingspan of about one meter (it's moth-like, not actually related to Earth insects). It lives its entire life high in the open sky, never ...
2
votes
5answers
296 views

How can you explain colour to beings that can see just black and white?

You have finished your journey and enter a new world. The intelligent humanoid natives are friendly and speak your language. However, as you get to know them, you discover that they can't see colour, ...