posted on Jan, 12 2014 @ 04:31 AM
This may be a bit of a strange question, but I am really stumped and cannot find a solid answer to this question, I'm hoping someone on ATS will be
able to give a good answer. My question is basically this: if light is hitting our eyes from all different directions and angles then wont there be
photons which come in from different angles but hit the same sensor at the back of our eye, and if so then how is it that we can form a crystal clear
picture of what is in front of us, as if all the photons were coming at our eyes in a perfectly parallel manner? I feel like there's a really simple
answer to this but I just cannot see it.
This picture should help illustrate what I mean:
The two yellow lines represent the path of two photons entering the eye through the pupil and then hitting the optical sensor nerves at the back of
the eye. Given the difference in the angles at which the photons enter the eye, those two photons could have originated from two objects which are
very far apart, but they can both hit the same sensors at the back of the eye. So how is it that we don't see a blurry mix of colors when we look out
at the world?
Of course this diagram is very simplified and I have left out the lenses inside our eyes, perhaps there is something in the design of the lenses which
prohibits light coming in from certain angles? I have thought about it quite a bit but I cannot see how any type of lense design could prevent this
from happening in a consistent fashion. I would really appreciate an answer from someone who understands what is going on here, or sources which
explain it. Thanks.