posted on May, 20 2011 @ 04:35 PM
Well, I do have a visual experiment for you. Take a flashlight, turn it on, and press the lit end agains the back of your hand - it helps if you're
in the dark. You should see a red glow on the front of your hand. This visual works better with your fingers actually, but the result is the same.
Your skin is more like a membrane than anything, so it's actually opaque rather than solid in color. This is partially why we have a natural rosey
hue in our skin tone - as the color of our flesh and fatty tissue shows through. Your eye lids are just that: a membrane. When you squint tighter all
you are really doing is wrinkling the skin and the wrinkles fold on themselves, creating a new layer separating light from your eyes.