This video shows the luminous effects obtained in a seemingly void vacuum, when excited by high frequency alternate currents of great potential. These effects and the overall bulb construction was described by Nikola Tesla in 1892 before the London Institute of Electrical Engineers. Since then, no one has been able to successfully replicate the single terminal carbon brush lamp, until now. I will publish a following video capturing the rotating brush phenomena at low vacuum pressure, soon.
More work and investigation is needed on developing advanced versions of this lamp, which will be presented in the near future.