Word: emit
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...CHINA by Emit Schulthess. 248 pages. Viking. $25. This opulent book of 165 splendid photographs, taken by Swiss-born Photojournalist Schulthess and supplemented by even-handed essays from Author Edgar Snow, German Journalist Harry Hamm and Professor Emil Egli, is about as close as most Americans will get to China this year. The photos, like China itself, seem timeless: men and women straining to haul boats upriver against a driving current, bent-backed peasants at labor in the fields, students planting trees, Mongolian horsemen racing across the steppe. And everywhere, plump wide-eyed children...
French Physicist Alfred Kastler's prizewinning work, on the optical resonance of atoms, was published more recently-in 1950. It explained his technique for irradiating an atom to make it emit radiation of its own, thereby revealing the nature of its structure. Because Kastler, now 64, paved the way for the later development of the maser-which earned U.S. Physicist
Such trees as fragrant pine and plants such as pungent sage produce the "blue haze" that occurs during summer, even over relatively uninhabited areas of land. They emit molecular substances known as terpenes and esters, which react with sunlight to form a smog similar to the one produced by man-made pollutants. Terpenes, says Went, like some industrial and automobile pollutants, are "incredibly toxic." In some parts of the West, where they are generated by sage, they actually inhibit the growth of other vegetation...
Working with nests of quail eggs, Cambridge University Research Psychologist Margaret Vince used sensitive instruments to record the movements and sounds of quail embryos during the last three days of their incubation period. Some twelve to 18 hours before hatching, she discovered, the eggs began to emit faint and intermittent clicks in time with the breathing of the embryo. The clicking gradually became louder and more regular, drowning out the sound of breathing, until it suddenly stopped only minutes before the eggs hatched...
Silver atoms that are caught in the penetrating beam capture neutrons and briefly become unstable isotopes, emitting gamma rays that can be recorded by the snooper's scintillation counter. Since silver isotopes, like radioactive atoms of other elements, have their own characteristic half life-or rate of decay-and emit gamma rays at a specific energy level, the snooper's detectors can distinguish them from atoms of other elements in the area that have also been made radioactive by the neutron beam...