Shouldn’t the vacuum insulate the glass from the heat of the burning filament?

  • Sunspear
    link
    fedilink
    arrow-up
    7
    ·
    1 year ago

    Maybe they are thinking of how mugs and thermoses can be labeled “vacuum sealed,” and that the marketing implies that the vacuum between the walls insulates the outer wall (where the hand touches) against the heat.

    • Sethayy
      link
      fedilink
      arrow-up
      3
      ·
      1 year ago

      And those are usually made out of some metal, that’ll do pretty good reflecting radiation heat transfer

        • Sethayy
          link
          fedilink
          arrow-up
          1
          ·
          1 year ago

          You ever seen those vacuum ovens too? Kinda doing the opposite, only letting radiation in, but from just solar radiation I’ve heard in sub zero temps they can get to a constant 500 F. Wonder what one would be capable of with some one way mirror type refraction to keep all that shit in