Chapter 23, Sections 2 and 3 Mirrors and the Eye.

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Presentation transcript:

Chapter 23, Sections 2 and 3 Mirrors and the Eye

Essential Questions: WWWWhat are the different mirrors? HHHHow are the mirrors different? WWWWhat are some uses of the different mirrors?

Plane Mirrors  A plane mirror is a flat mirror.  Reverse images from left to right  Image appears that same distance from the front of the mirror to the back to the mirror  Image in the mirror is called a virtual image.

Plane mirrors

Concave Mirrors  Mirrors that curve inward.  Images will be upside down  Also images can be real or virtual depending on how the light rays are passed through the focal point  Used in headlights and flashlights

Concave Mirrors

Convex Mirrors  Mirrors that curve outward  Images are right side up  Images are all virtual.  Used in side mirrors on cars and as security mirrors in businesses

Convex Mirrors

A little more about mirrors and lens  Convex mirrors and concave lens cause light rays to spread out.  Convex lens are thick in the middle.

Eye EQs  What are the parts of the eye?  How does light enter the eye and get interpreted?  What are some disorders of the eye?

The eye Cornea (refracts) Pupil Iris Lens (refracts) Retina Optic Nerve Vitreous

Rods and Cones  Rods and cones are special cells that process light.  Rods allow us to see black, white, and shades of gray  Cones are red, blue, and green.

Disorders  Color Blindness: Problem in the cones

Disorders

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