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Show How Do Wireless Waves Travel f As the result of a study of tho various va-rious types of receiving systems employed em-ployed In wireless telegraphv, Chnrlca A. Culver of the University of Pennsylvania Penn-sylvania concludes that the resistance of the earth between tho sending and receiving stations Is of prlmo Importance. Impor-tance. Ho thinks that the theory that the waves are propagated through the surface of the earth accounts for moie of the observed facts than doea the other theory that they pass through the free ether. At the same time, he finds that the earth theory does not, nt present, explain somo of the phenonii in that are noted In the practical wairinrs of tho system. |