I wasn’t buying it at first. Computers often substitute colors. Then I read the description. It doesn’t say to do this, though implied, but when you cover the pink leading into the “blue”, you see the color.
This is way cool. In my non-majors biology course I spend a great deal of time discussing color vision and color processing as an example of sensory perception, and this will be a fun illusion to bookmark. Students are always astounded that perception of chroma, tonal value, and even hue are vastly influenced by context, but it makes perfect sense from an evolutionary standpoint. So does trichromatic vision, and the wavelengths of light our photoreceptors favor. Thanks for posting this!
You have reminded me of one of my favorite quotes: “Life is a series of collisions with the future; it is not the sum of what we have been, but what we yearn to be.”
I wasn’t buying it at first. Computers often substitute colors. Then I read the description. It doesn’t say to do this, though implied, but when you cover the pink leading into the “blue”, you see the color.
This is way cool. In my non-majors biology course I spend a great deal of time discussing color vision and color processing as an example of sensory perception, and this will be a fun illusion to bookmark. Students are always astounded that perception of chroma, tonal value, and even hue are vastly influenced by context, but it makes perfect sense from an evolutionary standpoint. So does trichromatic vision, and the wavelengths of light our photoreceptors favor. Thanks for posting this!
You have reminded me of one of my favorite quotes: “Life is a series of collisions with the future; it is not the sum of what we have been, but what we yearn to be.”