PIRA: 6A65.46


 Lab Equipment  Directions
  1.  Pasco laser benc
  2. SP 155 laser
  3. 18 mm double convex lens (kit #9132)
  4. 238 mm plano convex lens (kit #9135)
  5. 2 magnetic lens holders
  6. large plano-convex lens
  7. paper screen
  1.  Set up as shown with laser beam hitting near the center of the large lens.
  2. Slide the large lens to the side until the beam goes through the edge of the lens. Tilt the lens so that the angle of incidence is not 90 degrees. You should see the triangular or “comet” image.