Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 626
LONDON SLOUGH Fig. 295.— IVzre Circuit. when a battery current had to be sent from Station A, Fig. 295, which wemay suppose to be London, to Station B, which we may call Slough, it wasat first thought requisite to provide a wire for the return of the current afterit had traversed the coils at the… … Fig. 296.— Wire and Earth Circuit. except a small portion at each end, which is connected with a large plateof copper buried in the earth ; the arrows show the direction of the cur-rent, according to the commonly received notion. By this plan the currentis increased in intensity, for the earth…
Inventions
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