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26cm long sealed glass tube containing mercury and (I think) iodine crystals, branded "CENCO" : r/whatisthisthing
![26cm long sealed glass tube containing mercury and (I think) iodine crystals, branded "CENCO" : r/whatisthisthing 26cm long sealed glass tube containing mercury and (I think) iodine crystals, branded "CENCO" : r/whatisthisthing](https://i.redd.it/26cm-long-sealed-glass-tube-containing-mercury-and-i-think-v0-voaetjpaqs6b1.jpg?width=1104&format=pjpg&auto=webp&s=260448b337c72c21e3eefe42dbf61aaa27425f95)
26cm long sealed glass tube containing mercury and (I think) iodine crystals, branded "CENCO" : r/whatisthisthing
![Amazon.com: 3B Scientific U8482170 Franck-Hertz Mercury Tube Only, For the Franck-Hertz experiment with mercury Amazon.com: 3B Scientific U8482170 Franck-Hertz Mercury Tube Only, For the Franck-Hertz experiment with mercury](https://m.media-amazon.com/images/I/71QsycUpyKL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: 3B Scientific U8482170 Franck-Hertz Mercury Tube Only, For the Franck-Hertz experiment with mercury
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Phosphorescent Mercury Tube - Phosphorescent Mercury Tube Manufacturers,Phosphorescent Mercury Tube Suppliers & Exporters - Kapur india
![Mercury is poured into a U-tube as shown in Figure (a). The left arm of the tube has cross-sectional - YouTube Mercury is poured into a U-tube as shown in Figure (a). The left arm of the tube has cross-sectional - YouTube](https://i.ytimg.com/vi/uQ3ii_dnCvE/hqdefault.jpg)