Word: sheet
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Dates: during 1980-1989
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...assumed, the cosmos seems to be organized into immense bubbles, each of them about 150 million light-years across. The walls of the bubbles are galaxies, and the interiors appear to be virtually empty. Most surprising of all is a feature Geller and Huchra call the "Great Wall" -- a sheet of galaxies at least 200 million light-years wide, 500 million long and perhaps 15 million thick. It looks like a single structure, but the scientists say it may instead be made up of the walls of adjacent bubbles. Says Geller: "Because it runs off the edge of our survey...
...Bring your own mug for take-out coffee--it's nicer than paper anyway. Save old handouts and notices and write your rough-drafts of papers, problem sets or letters on the back of them, instead if using fresh paper. Take lecture notes on both sides of each sheet of paper in notebooks or yellow pads. Use handkerchiefs instead of paper tissues--they are cheaper; they don't break; they absorb well and they worked fine for our grandparents. Don't accept bags when you buy things--bring your own if you need one. Use recycled paper; the Boston Food...
...plates is not uniform. Along fault zones the plates tend to become "locked," resisting the overall motion. Explains Berkeley seismologist Robert Uhrhammer: "Stress builds up in these areas that are in effect welded shut. It's as if the rock were being stretched like a big rubber sheet." At a certain point the rock snaps, allowing the plates to slip and release stress. The result is an earthquake...
...Secret Service imported a two-inch-thick, 75-foot-long sheet of bulletproof glass to place in front of the National Museum for today's inauguration of Democracy Plaza in order to protect Bush, Colombian President Virgilio Barco and the others. Barco's life has been threatened by drug barons in his country...
...1890s. Until then, most readers had to content themselves with engravings copied from photographs. Meanwhile, the bulky camera gear of the 19th century hardly lent itself to instant coverage. In the cumbersome wet-plate process, which became the norm in the mid-1850s, pictures were formed on a sheet of glass that had to be coated with an emulsion just before the exposure, then developed at once. Action shots were ruled out by the lengthy exposure times, several seconds or more. And while history might be made at night, photographs almost never were. Flash powder did not come into...