• lazylion_ca@lemmy.ca
    2·
    8 months ago

    How much pressure? Is the bulb pressurized or the smaller tube? Is it normal air or something specific like nitrogen?

    • SteveTech@programming.devEnglish
      2·
      8 months ago

      I searched it up:

      The Inside Structure Of The High Pressure Sodium Lamp

      It seems the smaller tube is pressurised, the larger bulb is under a vacuum. Some of the other diagrams also show a getter in the bulb, so it’s a proper vacuum tube level vacuum.