Hydrogen And Helium Spectrum Tube, 1 Each

The Hydrogen And Helium Spectrum Tube by United Scientific is a glass gas discharge tube that displays the emission lines of hydrogen and helium together, similar to lines found in stellar spectra. It has an approximately 10 cm capillary, sealed electrodes at each end with metal end caps and loops for wire connections, and an activity guide. Teachers use it with a spectrum tube power supply and spectroscope for atomic and astronomy lessons.