Word: cores
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Dates: during 1950-1959
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...performing a more complicated process. To determine direction, the ground beacon's pulses pass through a revolving (15 revolutions per second) antenna system that relies on two concentric cylindrical rings, one mounted with a single rod-shaped element, the other fitted with nine rods. Whirling around the antenna core, these rods, set at different modulations, "tag" (modulate) the signals as they go out. Every time the inner rod passes "zero" (north), a regulating signal is transmitted. In a sense, this signal is Tacan's compass needle. The airplane's Tacan separates all the signals, computes their differences...
Moderation Plus Mediocrity. The "revelations" of Dr. Modesto arrive in a large white envelope stamped "CENTRALISM is FOR YOU," and form the core of this uneven but intriguing first novel by Alan Harrington. The doctrine of "Centralism" and what it does to Hal Hingham gives Author Harrington, a Manhattan public-relations man, a slingshot with which to launch provocative pebbles at the panjandrums of selfhelp, the positive thinkers, the conformists, and the problems of 20th-century "adjustment...
...core of his plan was a one-two challenge to the Russians. He proposed that...
Rikitake reasoned that the basaltic lava forced up through Mihara's throat is strongly magnetic when it is cold. Like other materials, however, it loses its magnetism when it gets hot. Therefore, the region near the volcano's white-hot core should be less magnetic than other places a little farther away. Rikitake checked this theory by circling the mountain with his instruments. A chart of the magnetic field also showed the shape of the hot and hidden core...
According to his theory, this meant that the rock in its core was getting hotter and approaching the melting point. In December came the proof: the volcano had a small but definite eruption. In 1953 and 1954 the pattern was repeated. Whenever the volcano's magnetism diminished appreciably, a period of activity followed in two to six months. The greater the change in magnetism, the stronger the activity...