School of Physics Lecture Demonstration Manual

Of-1 Diffraction Grating Spectrum (using white light)

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

Aim

To demonstrate the white light spectrum.

Apparatus

Diagrams

Click on pictures to enlarge.

Diff Grating Spectrum Diagram

Description

A slide projector is directed towards the front of the lecture theatre. A diffraction grating with 15000 lines to the inch is mounted vertically in the beam producing a brilliant spectrum in the region shown.

Safety notes

Electrical safety 

Maintenance 

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