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Word: spectograph (lookup in dictionary) (lookup stats)
Dates: during 1940-1949
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Usage:

Among the many ores which have been sent in to be tested, one discovered in Ontario by Teaching Fellow Willard C. Lacy has been found to be the richest. Investigation of the specimens by means of the spectograph, the wonder-working detecting instrument that is taking the place of chemical analysis, is under the direction of Professor Esper S. Larsen...

Author: NO WRITER ATTRIBUTED | Title: SCARCE VANADIUM ORES DISCOVERED | 5/21/1942 | See Source »

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