Thread: the eye

rods and cones recive light, (not so much rods) and the brian makes a picture,

energy forms cannot be destroyed, but aas far as i know dosent the light dosent bounce out, where does it go?

dose it kick start the neurons message? no atp?
if not where does it go?

My anatomy/physiology knowledge is pretty weak, but this is my understanding.
The photons get absorbed by an atom within the light sensitive chemicals within the rods and cones. This absorbtion kicks an electron to a higher orbital. That initiates a chemical reaction that triggers a nerve.
The photon is gone, but it has set in motion a series of processes that our brains interpret as sight.

if its right, that suits me.

it jsut struck me, how it all worked, where'd the energy go.

An excellent page which will give you all the answers you seek and more.

http://www.med.uwo.ca/physiology/courses/sensesweb/

cheers

It must not absorb all the light, though. Otherwise we wouldn't be able to see people's eyes. they would be completely black.
Then again, maybe that's why your pupil is black.

thats exactly why your pupli is black,

when no light is coming out, we detect nothning, therefore it registeres as black,

we can see the rest of the eye