Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 574
as shown at the Paris Exhibition of 1867, andpeople were quite astonished to see electrical power capable of pro-ducing a brilliant light developed by a small machine 2 ft. long, i ft. wide,and 9 in. high. But the great velocity of rotation, and the consequentheating of the bearings, left much to… … Fig. 28of.—Siemens Dynamo. it consists of a copper cylinder, on which are wound a number ofjuxtaposed coils like those of a galvanometer. The revolving cylinder issurrounded by the poles of a system of electro-magnets excited by thewhole of the induced current being passed through their coils. In…
Inventions
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