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14.3 Curved Mirrors

14.3 Curved Mirrors. Date, Section, Pages, etc. Mr. Richter. Agenda. Warm-Up Review HW Introduction to Curved Mirrors Notes: Mirror and Lens Terminology Concave Spherical Mirrors Convex Spherical Mirrors Parabolic Mirrors Tests Back Time Permitting.

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14.3 Curved Mirrors

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  1. 14.3 Curved Mirrors Date, Section, Pages, etc. Mr. Richter

  2. Agenda • Warm-Up • Review HW • Introduction to Curved Mirrors • Notes: • Mirror and Lens Terminology • Concave Spherical Mirrors • Convex Spherical Mirrors • Parabolic Mirrors • Tests Back Time Permitting

  3. Objective(s): Students will be able to… • Predict and describe the reflected image in a curved mirror relative to distance from the mirror. • Distinguish between real and virtual images. • Describe how parabolic mirrors differ from spherical mirrors.

  4. Warm-Up: • Where do we see curved mirrors in real life? • What do they do that is helpful?

  5. Curved Mirrors • Where do we see them? • Driveways, spoons, dressing tables, passenger sides of cars, etc. • What do they do? • Magnify or shrink images • Distort images • Project images • Brighten or dim images

  6. Terminology for Mirrors and Lenses

  7. Terminology • Focal point: the point at which reflected or refracted rays of light converge (meet) • Concave: inwardly curved • Convex: outwardly curved • Real image: image formed when rays of light actually intersect at a single point • Virtual image: image formed by rays of light that only appear to intersect

  8. Concave Spherical Mirrors

  9. Concave Spherical Mirrors • Concave mirrors can display both real and virtual images. • The type of image displayed depends on the object’s position relative to the focal point. (see the following…)

  10. Concave Spherical MirrorsObject Closer than Focal Point • When the object is closer than the focal point: • The image is virtual • The image is magnified

  11. Concave Spherical MirrorsObject Farther than Focal Point • When the object is farther than the focal point: • The image is real, and can be projected onto another surface • The image is shrunken

  12. Concave Spherical MirrorsObject at the Focal Length • When the object is at the focal length: • The image is created directly over the object! • The image is unseen.

  13. Convex Spherical Mirrors

  14. Convex Spherical Mirrors • Objects appear smaller (think your passenger- side mirror on your car) • Wider area can be seen (like in a convenience store, to catch you delinquent kids) • Images are only upright and only virtual

  15. Parabolic Mirrors

  16. Parabolic Mirrors • With spherical mirrors, the closer the image gets to the edge of a mirror, the more the image is distorted. • This is called spherical aberration.

  17. Parabolic Mirrors • Parabolas focus every incoming wave to one focal point. • This eliminates the spherical aberration. • Paraboloid shapes are used for satellite dishes, solar panels, telescopes, etc.

  18. Recap This one’s important!

  19. Types of Mirrors and Images

  20. Homework • p. 551 #23-27, 30, 31

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