Word: seismographs
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Dates: during 1920-1929
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When asked whether the seismograph at the University Museum had recorded these recent quakes. Professor Mather said that it had responded to the one at Concord, but that there had been no record of the tremor in Japan. This was probably due to the disturbances which have been caused by the construction on the new Chemical Laboratory next door, where the steam shovels cause small earthquakes...
...seismograph, Professor Mather continued, is really two instruments, each pointing in different directions at right angles to each other. This aids in determining the direction from which the tremor comes. Each seismograph has a point which rests upon a revolving cylinder. An earthquake is recorded by the agitation of the line drawn by the point on the cylinder. When there is no agitation in the ground this line is perfectly straight...
...beneath a tumbling chimney. The town of Padang, Sumatra, collapsed in one thundering crash. Cairo reported over 4,000 houses in ruins. In Crete, the worst damage was demolition of archaeological treasures, especially at the Museum of Candia. Germany felt several shocks; also France, Italy, Southern Rhodesia and the seismograph at Georgetown University (Washington, D. C.). Studying their charts of the globe's temblor areas, scientists had no explanation for the simultaneous shuddering of such widely separated portions of the terrestrial crust, save that earthquakes are all due, ultimately, to redistribution of surface soils by rainfall, causing readjustments...
...newspapers sometimes get caught in the rain. Far better off is the man with a barometer in his front hall. Where earthquakes are concerned, predictions and precautions are much harder to disseminate and to take in time, and the results of unpreparedness are much more serious. Scientific laboratories have seismographs and report temblors to the newspapers with all possible speed, but people in California, Hawaii, Japan would be far better off if they could have seismographs in their front halls. More often than not the earth's major convulsions take place within a few hours of the first warning...
...shock recorded on the seismograph in the Geological Museum on Thursday afternoon was an earth tremor of unknown origin, according to an announcement made yesterday by Professor K. F. Mather of the Geological Department...