PASCO SE-8803 Discover Reflection Kit - Manual (Page 5)

012-09301A Discover Reflection Kit
5 ®
Field of Vision
Purpose:
Students will determine the field of vision for a given location in front of the mirror.
Equipment required:
• Plane mirror with stand
• Corkboard
• Colored pins
• Protractor
• Straight edge
• Pencil
Procedure:
1. Set up the apparatus as instructed in the "Equipment Setup" section.
2. Place a pin approximately 4 cm in front of
the center of the mirror.
3. Move your eye to the left side of the mirror
until the image of the pin is just at the edge of
the mirror. Draw a small eye at this position.
4. Use a straight edge or ruler to draw the path
of the light ray as it leaves the pin, reflects off
the mirror, and reaches your eye at this
position.
5. Move your eye to the right side of the mirror until the image of the pin is at the edge of the
mirror. Draw a small eye at this position.
6. Use a straight edge or ruler to draw the path of the light ray as it leaves the pin, reflects off
the mirror, and reaches your eye at this position.
7. Repeat steps 3-6 for pin locations 8 cm and 12 cm away from the mirror.
Questions
1. Define field of vision in your own words.
2. What happens to the field of vision as an observer moves away from the mirror?
3. What determines the field of vision?
4. Sketch a top view of a car including the rear view and side view mirrors. Using your
sketch, draw the field of vision for each mirror. Label the "blind spots."