• @[email protected]
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    fedilink
    27 months ago

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

    • @SteveTech
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      English
      26 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.