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I run by these flowers near my work on some of my noon workouts, and the first time I ran past them I had to stop because I thought I was having some kind of vision problem. When I looked right at the flowers they looked like one color, but when I saw them out of my peripheral vision, they looked like they were a different color (red versus purple, respectively).
I thought I'd figured out the cause as being my eyeglasses (which have UV filtering) -- they tend to make the flowers look less purple and more red, which would match the UV filter characteristic extending down a bit into the visible violet range. I figured that I saw more purple in the flowers with my peripheral vision because that light wasn't going through the eyeglass lenses.
But then today when I saw the flowers from farther away in bright sunlight, the middle part of the bank of flowers looked more red, and there was a thin blue halo around the whole group, especially along the top edge. Strange (and very beautiful).
Does anybody know what kind of flowers these are? I wanted to do some reading to see if this unusual visual effect has been noticed and documented.
Thanks!
I thought I'd figured out the cause as being my eyeglasses (which have UV filtering) -- they tend to make the flowers look less purple and more red, which would match the UV filter characteristic extending down a bit into the visible violet range. I figured that I saw more purple in the flowers with my peripheral vision because that light wasn't going through the eyeglass lenses.
But then today when I saw the flowers from farther away in bright sunlight, the middle part of the bank of flowers looked more red, and there was a thin blue halo around the whole group, especially along the top edge. Strange (and very beautiful).
Does anybody know what kind of flowers these are? I wanted to do some reading to see if this unusual visual effect has been noticed and documented.
Thanks!