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I run this joint, see?
Color Blind
I was diagnosed with color blindness as a child. I was told I was red-green color blind. However, this never made much sense to me, because I can tell the difference between red and green
OK, yes, I can. But reds seem duller to me. I have what is sometimes called "red weakness." There are three basic photopigments (colors) we humans see: red, green, and blue. People with normal sight are trichromats, whereas people we normally think of as color blind are monochromats: they see no pigment at all, or only one color (usually blue, the shortest wavelength).
Then there's dichromats, who cannot see one of the three wavelengths. I'm a trichromat like most people, but an anomalous one. Specifically, I am protoanomalous trichromat, which means my red photoreceptors are abnormal.
This explains some of why my wife says I can't tell the difference between various colors, but she thought it was all in my mind, because I can tell the difference between red and green, despite my story about what the doctor told me when I was a kid. I showed her two pictures, showing what a normal person sees, and what someone like me sees. My problem isn't very acute, and I can see the number "2" in the normal picture, but I have to strain for it. I can see some difference between the two pictures, but it is very slight. My wife sees a significant difference between the two.
(BTW, I got these pictures from a web site that created them using a color filter from wickline.)
because that's exactly how much difference there is. :-)
--Larry Wall in <10209@jpl-devvax.JPL.NASA.GOV>
Sir Trichromat of the Bipoles (Score:3, Funny)
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I for one, welcome the rule of our avian masters (Score:2, Funny)
If they designed those test-your-color-vision pictures instead of mere humans, we'd all fail their tetrachromat tests. They'd laugh at us. Little chirpy laughs. Full of pity and condescension at our inability to look at a flower and see the "FREE POLLEN HERE" sign in ultrapurple.
Re:I for one, welcome the rule of our avian master (Score:2)
Re:I for one, welcome the rule of our avian master (Score:2)
IIRC, tetrachromatism in humans is almost exclusively a female trait, much like all forms of color blindness is almost exclusively a male trait. The difference between avian tetrachromatism and human tetrachromatism is that people with the trait do not have ultraviolet color receptors, but have two sets of green (?) color receptors, so they can more finely distinguish colors in the middle of the human-visible spectrum. (I think one test was to tel
Re:I for one, welcome the rule of our avian master (Score:2)
I wonder what evolutionary advantages tetrachromatism would bring to humans. It is a very probable hypothese that perception of colours becomes more accurate through centuries (studying the vocabulary colours in ancient indo-european languages confirms this.)
Clothes (Score:1)
Re:Clothes (Score:1)
Yeah... he'd probably regret it, alright :-)