Word: pigments
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Dates: during 1950-1959
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Skin Screen. An individual's risk of harmful consequences, ranging from sunburn to cancer, is in inverse ratio to the density of the screen built into his own skin-the amount of pigment in the epidermis. This is most clearly shown, said Dr. Knox, in the contrast between the albino Negro, who has no tolerance whatever for the sun's tanning and burning rays, and the normal Negro, who has a high degree of tolerance, increasing with the darkness of his skin...
Having learned that red light was the key, the scientists squeezed the juice out of bean seedlings, separated the juices into many different fractions, and tested each for its reaction to red light. Their quarry proved to be a protein-containing pigment that makes up only one part in one million of the juice...
Change in the Morning. In a way that scientists still do not fully comprehend, the pigment changes its chemical structure when red light hits it. As long as the red light lasts, the new structure persists. When the light dies, the pigment begins slowly to change back to its original state, a process that takes roughly twelve hours. Thus, when the red rays in the morning sun strike a leaf, the light-sensitive pigment changes into its new state and stays that way until sundown. This tells the plant, in the chemical language to which it responds, how long...
...major discovery in basic knowledge, may lead to bigger crops grown faster, and to control over harvesting times. "It's as if we had been hitting a carburetor with a hammer for years in an attempt to adjust it," says Dr. Hendricks. "Discovering this pigment is like learning that a screw on the bottom of the carburetor is what regulates...
...lithograph by Andrew Stasik where a large mottled rectangular form slanted across the page elegantly balances the white of the paper surrounding it. As for the remaining few abstract pieces, they seem to be imitating avant-garde paintings while suffering from their inability to employ the tactile effects of pigment...