Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 435
Fig. 166. munication be*tween two countries separated by a straitor ocean is carried on through cables, sunk to^the 2 £ 410 ELEMENTARY LESSONS ON [chap. xn. bottom of the sea, which carry conducting v/ires care-fully protected by an outer sheath of insulating andprotecting materials. The conductor…
Electricity · Magnetism
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