2006-06-27 10:06:43 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Biology
u see darkness because light isn't present. Not whether is it possible to look at nothing.
2006-06-27 10:11:08 · answer #1 · answered by viper_xeno 2 · 0⤊ 0⤋
Vision is essentially what results when photoreceptors in our retinas respond to light signals in the environment. (Light is reflected back from an object in front of you- allowing you to see color and shape). A rod or cone (the 2 types of photoreceptors in the eye) initiate an chemical-electrical stimulus (aka: action potential) in response to the light signal. The action potential is then transferred through a neural network to the vision center in the very back portion of the brain. It is at this site where visual signals from the eyes get integrated and processed and the result is that you become aware of what you
"see." When you close your eyes, you are effectively blocking out the light. Thus you see blackness. Your photoreceptors are not activated. There is no visual stimulus being delivered to your brain.
2006-06-27 17:30:10 · answer #2 · answered by Girl Biologist 2 · 0⤊ 0⤋
one see's black when there is an absence of light. Since when one's eyes are close there is no light presence, nothing is seen and so it is black.
2006-06-27 20:05:20 · answer #3 · answered by Anonymous · 0⤊ 0⤋
When you close your eyes you see the back of your eyelids.
2006-06-27 17:09:07 · answer #4 · answered by evil_tiger_lily 3 · 0⤊ 0⤋
You can look "at" anything. Whether or not you see it has nothing to do with whether or not you are looking at it.
2006-06-27 17:13:03 · answer #5 · answered by gimpalomg 7 · 0⤊ 0⤋
because your eyes are closed....blackness
2006-06-27 19:52:02 · answer #6 · answered by Anonymous · 0⤊ 0⤋
just like looking at an x ray of your head, lol
2006-06-27 17:11:15 · answer #7 · answered by dragonwythe 3 · 0⤊ 0⤋
I do it all the time, it's called "staring in2 space"!
Usually when I'm ignoring some1!
2006-06-27 17:14:14 · answer #8 · answered by Anonymous · 0⤊ 0⤋
you are not looking at nothing.... you are not looking peroid!
if you take away the ability to look, can you still see???
2006-06-27 17:16:02 · answer #9 · answered by Anonymous · 0⤊ 0⤋
i can see white and i have NO idea how?
2006-06-27 17:10:10 · answer #10 · answered by ♥My 2 Cents♥ 5 · 0⤊ 0⤋