VERTEBRAE
- why do they all look alike?
- what is the function of vertebrae?
- evolution and natural selection is "good enough" not "the most perfect thing ever"
- wear it for half an hour, turn off all lights, then take of patch, you can see out of that eye and not the other!
- more rods than cones
- 120 million rods in one retina
- 6-7 million cones
- rods are more sensitive to light, cones 100x less sensitive.
- rhodpsin is chemical that absorbs the photon of light
more eye tricks
- hold dim light up to bottom eyelash
- roll back and forth
- will see shadows of blood vessels! This is because the blood vessel is above the retina layer!
- BLIND spot
- ball of clay, washer, pencils - turn the washer sidways and thread the washer with a pencil
- weiner finger and hole in hand - brain is adding the images!!
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