Word: magnesium
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Dates: during 1960-1969
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...Cape Kennedy a three-stage, 100-ft. Atlas-Agena rocket blasted downrange over the South Atlantic missile track in a perfect launch. Five minutes later, the protective shield, a redesigned shroud of magnesium thorium, was jettisoned right on schedule. Thirty-seven minutes after that, from a 115-mile-high parking orbit over the Indian Ocean, the rocket engine reignited, kicking the 575-lb. Mariner D payload toward Mars at the required speed-25,600 m.p.h. At week's end all was going well with Mariner D and its 138,-000 individual parts. But the spacecraft still has quite...
...antacids. But nowadays these are nearly all of the nonsystemic kind-unlike bicarb, they are never absorbed into the bloodstream and are far safer. The body processes them more slowly, so they do not give such quick relief. The most familiar, in the form of milk of magnesia, is magnesium hydroxide, and this is the main ingredient in many brand-name preparations. Since it has laxative properties, some manufacturers combine it with aluminum hydroxide, which is also antacid but, taken alone, is slightly constipating. Several proprietary preparations contain magnesium trisilicate, which neutralizes acid by both chemical and physical reactions...
...repertory ranged from far-in to farthest out. In a 50-min. work aptly titled Aeon, a blinding flash of magnesium flares stirred Cunningham's ten-member troupe into an otherworldly, slow-motion ballet. In the orchestra pit, Conductor Cage slowly raised and lowered his arms like a railroad signal, while his two-man orchestra conjured a percussive nightmare with such ear-splitting accents as a nail file rasped across a metal music stand. When the sound system shorted and buzzed harshly for several minutes, the audience accepted it as part of the show...
Sculpture must defy gravity, says Alberto Collie, and by using magnets he performs feats of levitation with objects made of aluminum, copper and magnesium. Though Collie's magnetized sculptures do not soar with full air borne freedom, they do hover and float* above their pedestals, attached by almost imperceptible nylon strings. The effect is playful and magical-rather like Collie himself, who combines the hot-eyed zeal of a young Merlin with the twinkle-eyed grin of a boy with a toy. Collie, 25, calls his works spatial-absolutes: spatial because they are floating in space, absolute because...
...vehicles in far-out space suffer from some far-out troubles. Cosmic radiation sickens their semiconductors. Vibrations and swift temperature changes cause fractures in all-important wires. Lubricants evaporate into the vacuum of space. But scientists are already working on some far-out cures. The latest: a tin-magnesium-aluminum alloy that can be made into wires that grow gap-bridging "whiskers" when broken and soon heal their own wounds...