Quick Answer: The Spectrum Tubes Power Unit energises one compatible gas-filled spectrum tube at a time so students can observe its bright-line emission spectrum. It is supplied as the power unit only; spectrum tubes are separate.
Last updated: October 2026
Key Features
Operates a single compatible gas spectrum tube
Power unit only; spectrum tubes not included
Used with a spectroscope or diffraction grating to view emission lines
Connects to the mains supply and involves high voltage, so it is for supervised use
The unit is switched off before a tube is removed or changed
Technical Specifications
Specification
Value
Operating capacity
For single compatible spectrum tube operation
Tube compatibility
Educational gas spectrum tubes
Included components
Power unit only
About This Product
Swapping tubes in the power unit lets a class compare the bright-line spectra of different gases and relate them to electron transitions between energy levels. Viewed through a spectroscope or grating, the lines make atomic structure concrete.
Frequently Asked Questions
Are spectrum tubes included with the Spectrum Tubes Power Unit?
No. The unit is supplied as the power unit only, and compatible gas spectrum tubes are obtained separately.
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