< Page:Popular Science Monthly Volume 90.djvu
This page needs to be proofread.

Cable Laying as the Signal Corps Does It

���How a cable looks when its covering is removed. To give it strength each cable is composed of a large number of small steel threads wound and twisted and sometimes inter- woven. No cable is stronger than any one of its threads. Were one thread to break, additional strain would fall on threads adjacent to it causing them to break and finally de- stroying the whole structure of the cable

�� �

    This article is issued from Wikisource. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.