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The Eye

Light Waves and the Eye Physics Class

Cyrus Ghaznavi

on 3 April 2012

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Transcript of The Eye

The Science of the Eye http://fractalontology.files.wordpress.com/2009/11/complex_eye_500.jpg In the eye, there are approximately 125 million photoreceptors http://www.eyedesignbook.com/ch3/fig3-61retinarods-conesBIG.jpg It is literally a ball of fluid with a hole, a.k.a. the pupil Nerve cells comprise the retina A lens is located between The iris is formed of pigmented fibers The cornea is the cover What it is What Happens Light enters the cornea then goes through the pupil. Depending on the amount of light, the iris dilates the pupil. Light passes through the lens and refracts, converging onto the retina. For near objects, the lens thickens and the opposite for far objects. Photoreceptors then fire impulses to the brain. http://www.artlex.com/ArtLex/b/images/blindspot.jpg Retina There are three layers The third is made up of rods and cones Rods (90%) primarily for vision in dim light Cones for fine details and color http://static.howstuffworks.com/gif/adam/images/en/retina-picture-c.jpg http://www.uphs.upenn.edu/news/News_Releases/jun07/photoreceptor-diagram-highres.jpg http://www.maculacenter.com/images/illustrations/eyeAnatomyCamera.jpg Processing Primarily found in the occipital lobe, certain areas of the visual cortex help process an image: V1: Registering V2: Transfers info and reacts to complex shapes V3: Orientation and angles V3A: Merges motion and direction (much like a vector) V4: Color V5: Movement V6: Depth Illusions http://jasonmarshall.net/wp-content/uploads/2009/12/color_theory_same.jpg http://www.dailycognition.com/content/image/14/same-color-illusion.png Color Eyes interfering http://euler.slu.edu/escher/upload/thumb/5/5f/Necker-cube.svg/399px-Necker-cube.svg.png http://www.polyvore.com/cgi/img-thing?.out=jpg&size=l&tid=4820506 http://files.overyourhead.co.uk/images/misc/optical-illusion-wheels-circles-rotating.png http://blog.remakehealth.com/Portals/11143/images//MRI%20eye%20orbit%20globe-resized-600.jpg The Human Brain by Rita Carter Attributions: Oh, by the way, I hope you took notes...
Because you're about to have a quiz... A B C D
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