Lunchtime Photo

7 thoughts on “Lunchtime Photo”

1. Crissa November 11, 2024 – 11:18 am at

   What fuel makes that color flame?
   1. cld November 11, 2024 – 11:26 am at

      Vapors from the catacombs.
      1. Josef November 11, 2024 – 11:54 am at

         lol.
   2. Steve_OH November 11, 2024 – 12:13 pm at

      I suspect PhotoShop.

      But calcium does burn with about that color, which makes cld's catacombs explanation more plausible.
      1. Kevin Drum Post authorNovember 11, 2024 – 3:31 pm at

         Yes, I amped it up a bit. But it really is that color, just not quite as saturated.
   3. geordie November 12, 2024 – 7:17 am at

      It looks to me like that is more a low-oxygen effect as opposed to an attribute of the fuel type. It makes sense to design the vessel to have a reduction atmosphere because the flame will "chase" the oxygen which creates a nice rippling flame effect, in addition to the color being easier to see in daylight.

      It is hard to achieve the effect unless you use a solid or liquid fuel which must volatize before burning. If I were trying to achieve that effect, I would probably use kerosene or something similar such as heating oil or diesel.

      One of the reasons I recognize that flame type is because it is one of the things you look for towards the end of a wood firing of pottery. The reducing atmosphere caused by too much fuel and too little draft creates carbon monoxide (among other things) which then steals oxygen from the molten glazes. That is what creates all the lovely colors.
2. dspcole November 11, 2024 – 1:41 pm at

   How do we know that’s not a burner on Kevin’s gas stove photoshopped to look like the eternal flame?

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