Geisler Tube on Stand

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$425.00

Quantity Available: 1

The Geisler tube was invented by the German glassblower Heinrich Geisler in 1857.The Geisler tube is an evacuated glass tube with an electrode at each end. Geisler tubes contain a combination of one of the following: rarefied (thinned) gasses such as neon, argon, or air, or conductive liquids or minerals. When a high voltage is applied to the terminals an electrical current flows through the tube. The current will disassociate electrons from the gas molecules, creating ions and when electrons recombine with the ions different lighting effects are created. The light will be characteristic of the material contained within the tube and will be composed of one or more narrow spectral lines. This one has a water bath around a central coil that could be used to experiment with different ions surrounding the evacuated portion of the tube.