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Spaceways, v. 3, issue 6, whole no. 22, August 1941
13
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SPACEWAYS 13 FOURTH COLOR FIELD by AMELIA REYNOLDS LONG It is possible that a one day in the remote future, the dreams of scientific fictionists may come true, and a race will be born with eyes capable of seeing--well, perhaps not into the fourth dimension, but at least sensitive to colors which are Invisible to us today. Before we laugh too loud and long at the idea, let's try a few simple experiments, and see where they lead us. First, we'll try a bit of color mining. If we haven't a regular color-mixer, a child's toy top will serve—the type that consists of a flat disk mounted upon a pointed base. We'll paint one half of the disk black and the other half white—assuming for the moment that black and white are colors-or paste over it two half circles of paper. Now we'll mix them by spinning the top, and see what we get. The result is grey, which is the intermediary point between black and white. Well, we had expected that. Let's try again, this time putting blue and yellow on our top. Around, around she goes— No, there's nothing wrong with your eyes; the rest of us see it, too. The result is not green, but g̲r̲e̲y̲ ̲a̲g̲a̲i̲n̲! We try once more, using red and green. This time we might expect gray, since we know that red and green paint. mixed in the proper proportions, will produce grey. But no; to the contrary thing has come up y̲e̲l̲l̲o̲w̲! This color-mixer certainly isn't behaving according to art school. A German scientist named Hering attempts to explain the mystery for us with his theory of color vision. This theory deals with the four color sensations—-red, green, yellow, and blue-and the two brightness sensations. black and white; and assumes that all other color and brightness sensations are obtained through these. It also assumes that the nature of color vision is photo-chemical, and that the actual mixing of color sensation takes place in the brain. The colors according to Hering, are related in pairs; as red and green, yellow and blue. Elements in the eye. when stimulated by these color sensations, undergo a process of metabolism; that is. a breaking down of tissues and [Large graphic] PLOTTED FIELDS OF VISION AND COLOR IN THE HUMAN EYE --- Red-green fields —-Yellow-blue fields -'- '- Black and white, or brightness field
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SPACEWAYS 13 FOURTH COLOR FIELD by AMELIA REYNOLDS LONG It is possible that a one day in the remote future, the dreams of scientific fictionists may come true, and a race will be born with eyes capable of seeing--well, perhaps not into the fourth dimension, but at least sensitive to colors which are Invisible to us today. Before we laugh too loud and long at the idea, let's try a few simple experiments, and see where they lead us. First, we'll try a bit of color mining. If we haven't a regular color-mixer, a child's toy top will serve—the type that consists of a flat disk mounted upon a pointed base. We'll paint one half of the disk black and the other half white—assuming for the moment that black and white are colors-or paste over it two half circles of paper. Now we'll mix them by spinning the top, and see what we get. The result is grey, which is the intermediary point between black and white. Well, we had expected that. Let's try again, this time putting blue and yellow on our top. Around, around she goes— No, there's nothing wrong with your eyes; the rest of us see it, too. The result is not green, but g̲r̲e̲y̲ ̲a̲g̲a̲i̲n̲! We try once more, using red and green. This time we might expect gray, since we know that red and green paint. mixed in the proper proportions, will produce grey. But no; to the contrary thing has come up y̲e̲l̲l̲o̲w̲! This color-mixer certainly isn't behaving according to art school. A German scientist named Hering attempts to explain the mystery for us with his theory of color vision. This theory deals with the four color sensations—-red, green, yellow, and blue-and the two brightness sensations. black and white; and assumes that all other color and brightness sensations are obtained through these. It also assumes that the nature of color vision is photo-chemical, and that the actual mixing of color sensation takes place in the brain. The colors according to Hering, are related in pairs; as red and green, yellow and blue. Elements in the eye. when stimulated by these color sensations, undergo a process of metabolism; that is. a breaking down of tissues and [Large graphic] PLOTTED FIELDS OF VISION AND COLOR IN THE HUMAN EYE --- Red-green fields —-Yellow-blue fields -'- '- Black and white, or brightness field
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