Sample of the element No. 17: Chlorine in a geissler tube being excited with high voltage so that it emits light.

---

Size: 3696px × 2448px
Photo credit: © Kim Christensen / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 17, chemistry, chlorine, clorine, discharge, education, element, emission, gas, geissler, halogen, high, illumination, light, periodic, physics, science, spectre, subdued, tube, voltage