Word: seismographic
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Dates: during 1920-1929
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...severe earthquake occurred at 5 :50 a. m. Jan. 15, on Honshu, main island of the Japanese Empire, in approximately the same area as the Great Earthquake of last September (TIME, Sept. 10 et seq.). The amplitude of the shock, as registered by the seismograph at the Osaka Observatory, was two inches of lateral movement, or half that recorded for the Great Earthquake...
...geophone, an instrument invented by the French during the War to detect sapping operations of the Germans underground, has been developed by U. S. Engineers for rescue work in mines, gauging tunnel borings, etc. It contains diaphragms like a seismograph, which transmit the most delicate vibrations to the observer's ears. Sledge pounding can be detected 3,000 feet through solid rock, and ordinary talking through 50 feet of coal...
...vivid flash comes the realization that men are atoms living on the hardened crust of a boiling pot--on a tiny ball itself whirling among countless similar balls, according to one vast plan. Today the earth merely trembles, the seismograph vibrates, and the scientist asks: "Somewhere...
...unusually heavy earthquake shock was recorded yesterday morning by the Seismograph Station at the University. The vibrations began shortly after 8.24, and at about 8.40 became so violent that the needles which record them went off the drum on which the record them is made and put the seismograph temporarily out of commission. A rough computation by Professor J. B. Woodworth '94 makes the distance of the earthquakes about 4470 kilometres from Cambridge, or about 2778 miles...
Professor J. B. Woodworth '94 will lecture on "Earthquakes and the Seismograph" in the Geological Lecture Room of the University Museum at 8 o'clock this evening. This is one of a series of lectures arranged by the Department of Geology, which are open to the public...