• Grimy@lemmy.world
    link
    fedilink
    arrow-up
    2
    ·
    edit-2
    3 days ago

    Always wondered what this was called. I get this often in winter, less during summer. It really puzzled me the first few times it happened, I just figured I was getting diabetes. I have a black tail that follows them so it’s even more noticeable then in the picture.

    • sp3ctr4l@lemmy.dbzer0.com
      link
      fedilink
      English
      arrow-up
      1
      ·
      edit-2
      3 days ago

      Basically, lighting conditions have to be just right to … basically, allow you to actually see your own white blood cells, in your own eyes, against the … background/everything you are seeing.

      So my guess would be that in the summer, where you are, the … ambient light of the sky is too bright, it overwhelms this effect, but in the winter, maybe its mote generally humid, or the light is coming through more atmosphere , at more oblique angles, and is thus less intense.

      Though if you are also seeing a… black tail, like… they’re followed by a black smear or a motion blur or something… that could be something else?