Lens Lab #1Name______

Take a meter stick and tape an index card upright on the zero end of it. Put a clothes pin on the bottom of lens A and set it on the meterstick. Put a light source at the 100 end of the meter stick and move the lens until the light source is focused on the card. Record the distance the lens is from the card, and then repeat with lens B and C.

Observations

distance from cardorientationsize of image

up or down

A

B

C

What is the difference between the three lenses?

Lens Lab #2

Put the lens on a page of printed words (this lab is fine). Lift the lens slowly away from the page. Repeat with all three lenses.

Observations

what happenssize of imagedistance from paper

orientation

A

B

C

What differences in the images do you see as you move the lenses away from the object?

Lab #3

Using the clothes pins on the lenses, make a telescope. Put lens C on the end of a meter stick. Hold lens C close to your eye (touching your eyebrow). Put lens A behind and look through the lenses. Move A away from your eye (leave C there ) until an image becomes focused. Record the distance from your eye.

Observations

Distance from eye______

What is the size of the image compared to the object?

Draw the image so that the drawing seems the same size as the one you are seeing. Also draw the object as it appears without the telescope.

Lab #4

Using the clothes pins on the lenses, make another telescope. Put lens B at one end of the meterstick and hold that end close to your eye. Put lens A close to lens B and look through it. Move it until the image is focused for your eye. Record the distance from your eye.

Observations

Distance from eye______

What is the size and orientation of your image?

Draw the image so that the drawing seems the same size as the one you are seeing. Also draw the object as it appears without the telescope.

Lab 5 Fresnel Lens

  1. Compare the Fresnel lens to lens A, B, and C. How is it similar? Different?
  1. Does the Fresnel lens magnify?
  1. Repeat Lab 1 using the Fresnel lens to replace the other lens.

Observations

distance from cardorientationsize of image

up or down A

  1. Repeat Lab 3 and 4 using the Fresnel lens to replace the middle lens and compare to the orginal data.

Observations:

Lab 3

Lab 4

Lab 6 Polarizer Lens

  1. Look at light through 1 polarized film. Turn it clockwise and describe how the light changes.
  1. Place the 2nd polarized film over the first. Describe how the light changes as you turn it clockwise.

Lab 7 Mirrors

  1. Hold bendable mirror as flat as possible a meter in front of your face. Describe how the image changes as you bend the mirror differently.
  1. How do you make an image of your head which is right side up but thinner than normal?
  1. How can you make an image that is upside down?
  1. Make an image of your head with 4 eyes—how?
  1. How can you make an image right side up but shorter than normal?
  1. Roll mirror into a cylinder 3 cm diameter, mirror side out. Set mirror on the black circle of Anamorph and look at the reflection. How does the image change after reflection?
  1. How does this happen?