Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 565
Fig. 276.—Insulated Coils surroimdingan Annitliis of Iron Wires. … Fig, 277.—Hand Gramme Machme, with JamirHs Magnet. the table apparatus with the magnet vertical, and formed according to thenew plan suggested by M. Jamin, who finds the best magnets are made bytying together thin strips of steel. 33 SM ELECTRICITY. But the importance of this invention consists in…
Inventions
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