PIRA: 6H20.10


 Lab Equipment  Directions
  1.  frame with glasses
  2. flashlight
  3. polarizer and holder (wood base)
  4. paper screen
  1.  Position the glass perpendicularly to the screen and shine the flashlight from the other end of the glass toward the screen.
  2. Angle the light so the beam strikes the glass, which transmits part of the light onto the screen. Notice that you see both the transmitted and reflected beams on the screen (photo #1).
  3. Rotate a polarizer in front of the flashlight so that the beam goes through it before hitting the glass. Notice that the reflected beam can be eliminated at certain positions of rotation.