Educational Diffraction Grating

Concept Overview:

1. Difference in pattern produced by diffraction gratings with a different number of slits.
2. Difference in pattern produced by light of different wavelengths

Lecturer Procedure

Step(s) to Follow

1. Hold diffraction grating vertically and perpendicular to path of laser beam.
2. Shine laser light through grating.
3. Observe pattern.

Expected Result

Red* dots will be more spread out that green dots.

Dots will be closer together for the grating with fewer lines.

*A purple laser pen is available by request