PIRA: 7B11.00

Lab Equipment

  • Pasco blazed diffraciton grating
  • 4 slit slides with cuvettes
  • prism lab stand
  • 90 degree clamp
  • slide projector


  1. Place the clear cuvette slide into the slide projector. Set the stand with the diffraction grating in front of the projector. You will see 2 complete spectra on the screen (one above the other). 
  2. Remove the clear slide and replace with the red filter cuvette. Notice that only the red part of the spectra comes through on the bottom spectra.
  3. Repeat with the blue and green filters.