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The black of the human eye is a hole called the pupil. The color part is really a muscle which contracts and dilates depending on how much light there is in the environment. When there is a lot of light, the iris (colored muscle) contracts, making the "hole" smaller. When there is limited light in an environment, the iris relaxes, which in turn causes the pupil to increase size. So the black is just a whole in the muscle where light enters the eye to be focused by the lens and computed by the brain.
What else can I help you with?
Are black holes invisible to the human eye?
Yes, black holes are invisible to the human eye because they do not emit any light.
What are all the colors of the iris of the human eye?
The colours of the human eye iris is black and white.
What colours can the human eye detect?
blue green brown and black
Are black lights harmful to the human eye?
Black lights emit ultraviolet (UV) radiation which can be harmful to the human eye in high doses. Prolonged exposure to UV radiation from black lights can cause damage to the cornea and lens of the eye. It is recommended to use caution and avoid staring directly into black lights for extended periods of time.
What is the differences between human and dogs eye?
dogs see in black n white
What makes black holes so attractive?
there not attractive because they are practically incisible to the human eye
The color part of the human eye is the?
The coloured (or pigmented) part of the eye is the iris.
Why are black holes black and not any other color?
Black holes are black because their gravitational pull is so strong that not even light can escape from them, making them appear black to the human eye.
What happen to the capillaries around your eye when you get a bruise or a black eye?
you eye will be black and white .
If you have a cut under your eye will you get a black eye?
It is possible but most of the time you will not get a black eye.
What happens to the capillaries around your eye when you get a bruise or a black eye?
you eye will be black and white .
What is the black coloring in your eye?
The black coloring in your eye is the pupil.
