School of Physics Lecture Demonstration Manual

Ef-4 Discharge Tubes

Published: Tuesday 14 March 2006 - Updated: Tuesday 29 March 2011

Aim

To demonstrate that elements, molecules and compounds have characteristic spectra.

Apparatus

Diagrams

Click on pictures to enlarge.

Discharge Tubes Diagram

Description

The Geissler tubes available include

 

Argon

Carbon Dioxide

Carbon Monoxide

Helium

Hydrogen

Krypton

Nitrogen

Bromine

Methane

 

These will be excited with the tesla coil.

Safety notes

Electrical safety 

Sharps safety 

Maintenance 

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