Geisler Tube

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$395.00

Quantity Available: 1

This large Geisler tube has a water bath area around the central evacuated coil to experiment with different ions in solution. The Geisler tube was an evacuated glass cylinder 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.