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Questions tagged [vision]

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

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1answer
114 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
246 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
235 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 ...
7
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 ...
6
votes
2answers
113 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
185 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
83 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 ...
-2
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1answer
99 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
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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
169 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 ...
1
vote
1answer
132 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
54 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
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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
283 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
167 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
189 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
397 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
401 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
496 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
100 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
477 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 ...
7
votes
2answers
271 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
313 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
199 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
246 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
106 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 ...
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votes
1answer
245 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. :)
29
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
143 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
215 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 ...
4
votes
3answers
134 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
274 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, ...
0
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2answers
128 views

What sensory mechanism allows a person to “see” based on the different density levels of physical matter? [closed]

Scenario 1: A person is dozing for short time with the light on, likely only a few minutes, and upon gradual return to his/her normal "eye vision only" consciousness, briefly "sees" the brick outlines ...
2
votes
3answers
218 views

What are some alternative methods of perception on 'dark' worlds?

For instance; life manages to develop on a planet orbiting a black hole. What are some methods that native life could use for perceiving the environment around them? (e.g. echolocation, sonar, gamma-...
8
votes
4answers
252 views

What would people try to hide (and how) if what they see can be perceived telepathically by anyone else?

Proposal: a world where people have a form of telepathy that enables them to see what is seen by anyone else. In this world, people would have difficulty hiding any complex task from other persons. ...
9
votes
5answers
576 views

What are alternative particles to photons that would allow vision?

I swear I saw this question elsewhere. Let me know if this is a dupe. Photons are great. They're little bundles of energy that Reflect off of nearly everything, allowing us to see faraway objects ...
10
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3answers
639 views

Can we identify distinct “colors” beyond visible light?

Let's talk about the visible light "rainbow" In almost all depictions of the electromagnetic spectrum, visible light is shown as a rainbow, and adjacent parts of the spectrum are monotone in color - ...
6
votes
2answers
164 views

What adaptations to a mammal's eyes would allow it to see large contrasts well, and what other effects would those have?

There is a nocturnal mammal, about the size of a common red fox, which has evolved (by way of some unspecified-at-this-point selective pressure) the ability to see well in situations involving large ...
4
votes
4answers
2k views

How would a person see with an adjustable cross-shaped pupil?

I know that this would, perhaps, be biologically impossible, but suppose it's possible, how would such person see? I know that cats have a vertical adjustable pupil and goats have a horizontal one, ...
0
votes
1answer
149 views

Could aliens naturally evolve synesthesia?

For all who are unaware, synesthesia is a condition in the brain where two or more senses are connected; for example being able to see sound or hear color. Of course they do not actually see color or ...
13
votes
9answers
7k views

What would people with black eyes see?

Imagine if you will..a world where humans had large black pupils that covered most of their eye like the picture below The question: What would these humans see and could they see more/better/worse ...
3
votes
2answers
184 views

What would the science be behind a monster who can only see shades of red, black and white?

I have an idea for this crazy blood thirsty monster and the reason behind its love for killing is red is the only color it sees, but I don't know how or if that is possible a logical scientific ...
36
votes
18answers
7k views

Benefits of or reasons why a species would have only one eye?

Traditionally, a Cyclops has one eye, as well as some other aliens in fiction. My question is simple: Would there be any situations, Earth-like or otherwise, where a creature would benefit from ...
37
votes
8answers
8k views

How to modify the human eye to see into the ultraviolet and infrared bands?

If I'm writing a sci-fi story and I wanted to include humans with modified eyesight that see into the ultraviolet and infrared bands of the electromagnetic spectrum, what would I have to change about ...
8
votes
3answers
767 views

Stationary eye with moving pupil, is it possible?

I am making a sci-fi web-comic set on an alien world and I thought up an idea for an eye that works much like an eye from a mammal, but instead of moving the whole eye, only the pupil moves. This idea ...
22
votes
4answers
2k views

Would white pupils/irises on an animal allow it to see properly?

I'm designing creatures with naturally occurring white or pale grey irises and pupils so that it looks like their eyes are all white. What effect could this have their vision (colorblindness, light ...