School of Physics Lecture Demonstration Manual

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

Published: Wednesday 15 March 2006 - Updated: Monday 28 March 2011

Aim

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

Apparatus

Diagrams

Click on pictures to enlarge.

Line Diffraction Diagram

Description

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

Safety notes

Electrical safety 

Laser safety 

Maintenance 

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