![File:Hydrogen discharge tube.jpg](http://upload.luquay.com/wikipedia/commons/thumb/8/83/Hydrogen_discharge_tube.jpg/800px-Hydrogen_discharge_tube.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:51, 18 July 2010 | ![]() | 3,000 × 1,000 (274 KB) | Alchemist-hp | == {{int:filedesc}} == {{Information |Description={{en|1=Spectrum = gas discharge tube: filled with: hydrogen H<sub>2</sub>. Used with 1,8kV, 18mA, 35kHz. ≈8" length.}} {{de|1=Spektralröhre = [[:de:Gasentladungs |
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