Neon Flicker Flame Skull Bulb: no flame but instead emission spectra from excited neon gas due to the presence of a discharge electric current. A dual axis diffraction grating creates a dramatic effect and shows that neon only emits light in specific wavelengths of reds and yellows at AC house voltages. 💀 Happy Halloween! 🎃 ➡️ Follow the link in my profile for info on where to get similar bulbs and other amazing items featured here on @physicsfun #neon #emissionspectra #excitation #physics #ph