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HIGH BREED TELEGRAPH TRANSMISSION much higher E. M .F. ' s may be used, and connections I found to be 3'46 henries, the necessary condenser com· BY MEANS OF ALTERNATORS. and disconnections made almost without spark at the I pensation depending solely on the speed of transmisbrush contacts. sion (or wave·frequency) and the arrangement of the ALTHOUGH, at the present day, high speed trans- The speed of the transmitting wheel with resfect to receiver coils, and in no instance having any direct ordoi:10.1038/scientificamerican12101898-19196asupp fatcat:ste3hmbluje5zpzzq2apugd73y