Submarine telegraphs; their history, construction, and working. Founded in part on Wèunschendorff's 'Traitâe de tâelegraphie sous-marine' and compiled from authoritative and exclusive sources (1898)
Bright, Charles, 1863-1937 · London, C. Lockwood and son · leaf 508
too spring)' and rigid for handling and working a bulk of wires of this number and section, as well as for economical reasons. Such wire, whilst bearing a strain up to about 30 tons, has an elongation equivalent to as much as 18 per cent, of its length when stretched.* It is usuall)' known as… … Fig. 60. — A Fine Specimen of Coral. The specific gravity of ordinary bar iron is about 7.8. If suspended vertically in water, a wire composed of the above should not break under its own weight until it is made to support a length of about 3.5 N.M. In practice, however, it is not prudent to load…
Cables, Submarine
Internet Archive · Northeastern University, Snell Library · Public domain (published before 1931). Free to use for anything.
