1. Curved Mirrors

2. Goal of the class
To understand ray diagrams and how curved mirrors work.
Question of the Day: How is the focal point related to the curvature?
Previous Answer: No previous questions
Previous question: What is infrasonic sound?

3. Types of Images
Real – image appears in front of the mirror (could be projected onto a screen)
Virtual – image appears behind the mirror
Design and build a periscope,
Using a laser to measure sugar / salt concentrations,
Measuring the data track separation of a music cd
Dampening sound waves for sound insulation buy layering.

4. Size Enlarged – image is larger than object
Reduced – image is smaller than object
Same – image and object are same size

5. Attitude Upright – image is right-side up
Inverted – image is upside-down
Laterally inverted – image is flipped horizontally

6. Curved Mirrors

7. Concave Mirrors

8. Concave Mirrors

9. Terminology Focal point (F) – where the light rays meet
Vertex – the middle point of the curved mirror
Focal length (f) – the distance between focal point and focal length

10. Ray Diagrams
Ray 1 – travels parallel to the principal axis and reflects through the focal point (F).

11. Ray Diagrams
Ray 2 – travels through the focal point and reflects parallel to the principal axis.

12. Ray Diagrams
The point where the rays converge is the location of the image