Word: earth
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Dates: during 1950-1959
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...Most Rev. Joseph A. Burke, Bishop of Buffalo, might look even beyond Buffalo and discover that we have followed God's command to be fruitful-we have multiplied, and the earth is filled; now all we need to do is use our heads...
...battery power. At 0915 on that sunny August morning, Little Boy fell free, tail ticking. Four clocks, four barometric switches, four radar rigs inside Little Boy measured the fall. After 15 long seconds, Little Boy began listening for the faint echoes of its own radar signals to earth. On the igth echo-800 ft. above the rooftops of Hiroshima-a powder charge sent one uranium mass bullet-ing through a hollow shaft into the other mass. In one fifteen-hundredth of a microsecond, fission began. In that dreadful instant a city died, and 70,000 of its inhabitants...
...great reinforced concrete dam at Kuibyshev stretches nearly three-fourths of a mile across the mighty Volga River. Behind it lies an artificial reservoir 1½ times the size of Great Salt Lake. In its construction, 6.5 billion cu. ft. of earth was excavated-more than was dug out in the building of the Panama Canal. The huge, pale grey power station housing the 20 turbines is 2,000 ft. long, 200 ft. high -twice as large in volume as the gingerbread skyscraper of Moscow University, the tallest building in Russia...
Inertial navigation systems are only as old as guided missiles, which brought to a head the brewing problem of modern aerial navigation: how to get a fix at great speed while all the usual sun and star angles are constantly changing. Solution: an instrument that records and remembers earth distance and direction traveled from a known starting point. One of the best systems was developed by North American Aviation, Inc. for the Navaho missile. The Navaho was scrapped, but last February the Navy ordered a Navaho guidance system installed in Nautilus. It was aboard the sub nine weeks later...
Explorer IV spotted two other puzzles. Cosmic radiation measured close to earth is fairly weak near the geomagnetic equator (where magnetic deflection is greatest), and strongest near the magnetic poles. At 1,200 miles above South America, the radiation hit Explorer IV at a heavy ten roentgens an hour-enough to give the human space traveler his top weekly X-ray dosage in about two minutes. And one Geiger counter inside the satellite, though coated with lead 1/16 in. thick, recorded 60% as many impacts as its unshielded mate, which in turn reported radiation almost as intense as that reported...