PIRA: 6C10.10


Lab Equipment  Directions
  1.  Spectra Physics laser – red
  2. Elec-Opt. laser and power supply – green
  3. Elec-Opt. laser and power supply – yellow (match laser color and # on both 2 and 3)
  4. two lab stands
  5. five 90 clamps
  6. two 3 finger clamps
  7. three adjustable lens holders
  8. lab jack
  9. three diffraction gratings
  10. plug strip
  1.  Set up as shown. Clamp the gratings in the orientation shown.
  2. Turn on lasers and set beams parallel so that three diffraction patterns are seen lined up on a wall/screen.
  3. Compare the patterns formed as each color of light is diffracted.