The book The Electric Telegraph Its History And Progress was written by author Edward Highton Here you can read free online of The Electric Telegraph Its History And Progress book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Electric Telegraph Its History And Progress a good or bad book?
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" Fortunately, however, there is now no need of either hang- ing or damning the rascals, for the law makes a wilful damage done to the electric telegraph a misdemeanour, and punishes accordingly. AMPERE'S TELEGRAPH. Immediately after the brilliant discovery of (Ersted in 1809, (viz. That a magnetic needle always tends to place itself at right angles to an adjoining wire through which an electric current from a galvanic battery is passing, ) Ampere read a paper before the Academy of Sciences, at... Paris, in 1820, on a plan for an electric telegraph, based upon this discovery of (Ersted. Its principle of action was the one subsequently used by Pro- fessor Wheatstone in all his needle telegraphs, and therefore to Ampere, who first proposed the use and combination of the magnetic needle the coil of wire and the galvanic battery, is due the credit of being the first person to publish to the world the perfect practicability of an electric telegraph con- structed with magnetic needles surrounded by coils of wire, and moved by electricity generated in the galvanic battery.
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