Word: german
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Dates: during 1960-1969
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After waiting three months, the Gens brothers decided to go it alone- but responsibly. First, they studied detailed exhibits of mining techniques displayed at Munich's German Museum. Back in Cologne, they bought mortar and scrounged bricks from construction sites, then placed a sand-covered ceiling over the old entrance of their excavation - to make it appear that they had filled it in. Entering the excavation through a secret door they built through the back of a cupboard, they dug farther, shoring up their excavations with brick columns and meticulously uncovering stone after stone-some of them weighing...
...former fiancee of martyred German theologian Dietrich Bonhoeffer has given 38 of his letters to Harvard's Houghton Library...
...letters, written from a German prison camp and smuggled out by a friendly guard, show Bonhoeffer's more personal side--"a new level of intimacy"--according to the Reverend Paul Lehman of the Union Seminary, a close friend of Bonhoeffer...
...chromosome closeups were made by German scientists at the University of Münster, using the recently developed scanning electron microscope. Unlike the conventional electron microscope, which forms an image by passing an electron beam through extremely thin slices of a specimen, the scanning device plays a fine electron beam back and forth across the surface of the object being examined. Electrons knocked out of the surface of the specimen by the scanning beam are collected and converted into signals that are projected on a television screen in the form of a picture...
...tilting their chromosome specimens, which were taken from a human white blood cell, the German scientists were able to get a side view and measure their thickness-about four-millionths of an inch at their thinnest, center portion and ten-millionths at the thickest part of their "limbs." In Britain, where scientists at St. George's Hospital Medical School are also using scanning electron microscopes to examine chromosomes, the resulting photographs have suggested that chromosomes have an underlying fibrous structure. From these and other scanning electron closeups, scientists hope eventually to gain new insight into the complex processes...