Word: seismograph
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Dates: during 1910-1919
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...When the seismograph is sufficiently sensitive it is possible to tell not only the position of the hostile artillery, but also its calibre--the last requiring a practised eye. It is also possible to distinguish in the tremors recorded by the instrument the difference between shocks produced by the fall of projectiles, and those caused by the recoil of the guns. It is through the shock produced by the fall of the projectile that the calibre of the firing battery may be determined...
European military scientists who have made the most intensive study of the use of the seismograph in this connection have suggested building movable seismograph stations ten or 12 miles in the rear of the trenches, and connected with them by telephone so that trained observers can transmit information relating to the size, position and calibre of the enemy's batteries to the commanding officer...
...University will show and describe a number of specimens, instruments, etc. , mostly illustrative of current work. The exhibit will consist of 32 parts, representing the departments of Zoology, Botany, Mineralogy and Petrography, Geology and Geography, and the Peabody Museum. One of the most interesting features will be the seismograph records of recent earthquakes, including that of Messina in December, 1908. There will also be illustrations of the work done in Montana by the Harvard Summer Geological Expedition. Members of the Faculty and their friends have been invited to the afternoon meeting...
...Harvard Seismographic Station in the geological section of the University Museum is open to inspection by students of the University and their friends between 3 and 5 o'clock on the afternoons of this week. Professor J. B. Woodworth '94 or a representative will be present to explain the seismograph and to show the records obtained of distant earthquakes. The Students' Meteorological Observatory, on the roof of the Geological Museum, is also open for inspection at the same hours as the Seismographic Station. Professor R. DeC. Ward '89 or Mr. W. G. Reed, Jr., '06 will be present to explain...
...Harvard Seismographic Station in the geological section of the University Museum is open to inspection by officers of the University and their families between 3 and 5 o'clock on the afternoons of this week. Professor J. B. Woodworth '94 or a representative will be present to explain the seismograph and to show the records obtained of distant earthquakes. During next week the station will be open for inspection by students of the University at the same hours. The Students' Meteorological Observatory is also open for inspection at the same hours as the Seismographic Station. Professor R. DeC. Ward...