Word: chollar
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...autobiographical Roughing It. The population has dwindled from 28,000 to 800, but the town remains lively. Families can stay at one of several 19th century hotels and tour the museums commemorating Twain and the strike-it-rich era. Children will particularly enjoy going underground to visit the Chollar Mine. If you can, time your visit to coincide with the Bonanza Days Gunfighter Championships, June 18-20, or the Storey County Jumping Frog Jubilee, July...
...Bible was reproduced by what Bob Chollar, the company's head of research, calls photochromic micro images, or PCMI. The film has none of the silver halide grains that are the vital element in conventional photographic film; instead there is a very thin layer of a dye that darkens rapidly when exposed to ultraviolet light. The resulting picture has no "grain." Images of Bible pages projected in ultraviolet were reduced by lenses and focused one by one on the dye. After each exposure the film was moved mechanically to array the tiny pages in close-packed rows. This miracle...
...take-off point, says Robert G. Chollar, research chief of the National Cash Register Co. at Dayton, was a trick paper coated with clay on one side and with a special colorless ink on the other side. When the sheets were superimposed and written or typed on, the clay and ink were forced into contact. The ink turned deep blue, making a "carbon copy" without carbon, but the paper was no good because in time the ink seeped through it, making unauthorized contact with the clay and staining the paper blue...
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