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Sideways Perspective Of A Dahlia

This bloom wasn't totally open yet, so I felt like a side view might prove more interesting.... Yellow is such an eyecatching cheerful color, but did you ever wonder how we are even able to perceive this color, since we don't have retinal cone receptors that correspond to yellow? Most of us have receptors for blue, green, and red, yet we are able to see yellow since that wavelength appears to stimulate red and green cone cells simultaneously. I don't know who came up with that explanation, and ironically, when I mix my artistic reds and greens, I come up with a black color. Confusing stuff; at least for me anyway, ha ha! :-):-)

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Uploaded on March 1, 2016