If a battery on the mainland is connected through a key with the shore end of the main cable, and a speaking galvanometer is in circuit with the short cable crossing the Fastnet rock, then closing or opening the battery connexion will create a deflection of the galvanometer.
Had been laid, the cable snapped, owing to a mistake in the manipulation of the brake, and the ships returned to Plymouth with what remained.
Elec. Eng., 27, p. 938.) It may be explained as follows: - Suppose a battery on shore to have one pole earthed and the other connected to an insulated submarine cable, the distant end of which was also earthed; if now a galvanometer is inserted anywhere in the cable, a current will be found flowing through the cable and returning by various paths through the sea.
The corporation has acquired the gas-works, the cable tramways (leased to a company), the electric lighting of the streets, and the water-supply from the Pentlands (reinforced by additional sources in the Moorfoot Hills and Talla Water).
The history of the initial failures and final success in laying the Atlantic cable has been well told by Mr. Charles Bright (see The Story of the Atlantic Cable, London, 1903).1 The first cable laid in 1857 broke on the IIth of August during laying.
A coastwise cable runs from Para to Montevideo with double cables between Pernambuco and Montevideo.
They consist of an electric battery cable and lamp-holders and small glow lamps; that for the hind-sight is coloured.
Recent statistics bearing upon cotton are collected annually in the two publications, Shepperson's Cotton Facts and Jones's Handbook for Daily Cable Records of Cotton Crop Statistics.
The following year an additional cable was laid from Bacton, in Norfolk, to Borkum, in Germany, at the joint expense of the British and German governments.
Owing to the experience gained with many thousands of miles of cable in all depths and under varying conditions of weather and climate, the risk, and consequently the cost, of laying has been greatly reduced.