Word: semirodriki
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...famous 200-in. glass mirror for the Hale Telescope at Mount Palomar; beyond that size, glass mirrors tend to sag and distort un-acceptably, affected both by their own weight and by changes in temperature. The only larger mirror in the world, a 236-in. monolith atop Mount Semirodriki in the Soviet Union, is apparently hopelessly flawed and has done little significant work since being completed in 1974. One solution to the size problem is to make several smaller mirrors work together, simulating a single large one. The computer-synchronized Multiple-Mirror Telescope atop Mount Hopkins in Arizona, for example...
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