Geissler and Discharge tubes

Geissler and Discharge tubes

Geissler tube

Geissler tubes are the great grand daddy of fluorescent lights. They are tubes with rarefied air in them that glow when a suitable high voltage power sully is put across them. They will work of of a Wimshurst or of an induction coil. Some are amazingly intricate and use not only normal glass but also exotic materials such as uranium glass that fluoresces green when exposed to ultraviolet light. Such as this one. I have several but take care, if the vacuum has gone then there is always the chance they will explode.



If you come across any you do want let me know.
Geissler tube





This one looks like a condenser when not in use, the liquid jacket is filled with fluoroscene, a dye that glows when exposed to UV.



Geissler tube

This is a simple one with just plain glass but shows the route the current takes.





Geissler tube Another simple one. Colours and the striations vary with the gas pressure, but that is another story.




Hydrogen discharge Hydrogen discharge tube, shows its spectra




Oxygen discharge Oxygen discharge tube, shows its spectra




Carbon dioxide discharge Carbon dioxide discharge tube, shows its spectra




Neon light discharge Neon lamp, shows its spectra


Site Map