Od-2 Diffraction (Using Grating 4000, 8000, 15000 lines/inch)

Aim

To demonstrate the diffraction pattern accompanying a transmission grating with thousands of lines to the inch.

Apparatus

  • Laser
  • Optical bench
  • Diffraction grating

Diffraction Grating Diffraction Diagram

Difraction Grating Setup and Diagram

Description

The optical arrangement shown above is set up in the front of the theatre. The resulting diffraction patterns are large and bright enough to be seen in a darkened lecture theatre.

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