• If Only@sh.itjust.worksEnglish
    17·
    26 days ago

    Dogs aren’t fully color blind. They are dichromatic, whereas we are trichromatic. They see two colors, we see three.

      • eleijeep@piefed.socialEnglish
        12·
        26 days ago

        Green traffic lights are slightly blue and this makes them easy to distinguish from the red light which will only ever trigger the yellow cones.

        ObPzNorXLC3y36q.png

        • lugal@lemmy.dbzer0.comEnglish
          2·
          26 days ago

          TIL Thanks!

          This looks like the red one is the hardest to see which would be unfortunate. Do you know if that is actually the case or is it just a side effect of how ever this image was created?

          • eleijeep@piefed.socialEnglish
            3·
            26 days ago

            For humans with red-green colour blindness? I don’t know, you’d have to ask them! There are two types of red-green colour blindness though, people who lack red cones and people who lack green cones. I think the lack of red cones would make the perception more like the image above, whereas a lack of green cones would make the red light very visible but the green light a dim purple-like colour.

            To make this image I used a website that was specifically for seeing a dog’s vision so who knows how accurate that is.