Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 552
ilver, which dissolves in proportion as the metal is deposited on the nega-tive pole. As the charging of batteries is a troublesome operation, andtheir action is liable to variations which aftect the strength of the currents^the more uniform, more convenient, and more economical mode of pro-ducing… … Fig. 265.—A Current producbtg a Magnet. manner already described, but itself possesses magnetic properties, ofwhich, indeed, its action on the needle is the result and the indication. Ifsuch a wire be plunged into iron filings, it will be found that the filings areattracted by it: they cling in a…
Inventions
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