The fireside university of modern invention, discovery, industry and art for home circle study and entertainment . rs (loud-voiced speakers) is athand to speak the news. The Hir-mondo Telephone is an institution ofwhich Buda-Pesth is proud, and hasa large number of annual sick or convalescent are especi-ally benefited by its conveniences. Is there a7iy similar institutionelsewhere ? Yes. The Theatrophone. At Paris the theatres are servedwith telephone attachments, which convey to distant persons allthe sounds of the stage and audience, by which not only thevoices of the actors
The fireside university of modern invention, discovery, industry and art for home circle study and entertainment . rs (loud-voiced speakers) is athand to speak the news. The Hir-mondo Telephone is an institution ofwhich Buda-Pesth is proud, and hasa large number of annual sick or convalescent are especi-ally benefited by its conveniences. Is there a7iy similar institutionelsewhere ? Yes. The Theatrophone. At Paris the theatres are servedwith telephone attachments, which convey to distant persons allthe sounds of the stage and audience, by which not only thevoices of the actors can be heard, but the stir in the audience,and the relative size of the house can be judged by the skill-ful. Is there a long-distance Telephone ? Yes. The small cities adjoining large ones were attached tothe city systems as early as 1888. The fee is extra, and varies,usually up to half a dollar for a conversation between cities inthe same State. But in 1890, after many failures, the Long Dis-tance Telephone between Chicago and New York was put insuccessful operation at a fee of nine dollars for five minutes. Fig. 32. EDISONS CARBONSPEAKING TELEPHONE. ELECTRICITY. 71 conversation. Professor Bell was the first person to speak atthe New York end, and Mayor Washburne replied from Chicago. What other remarkable thing has been done lately with Elec-tricity ? The Storage Battery has been perfected, and by its agencythe electric launches at the Worlds Fair are supposed to haveyielded a profit of $500,000. By attaching this battery to aDynamo, certain chemical changes take place in the metalswithin. When the Dynamo is taken off, the chemical changesare reversed, and the work is more slowly undone. At Paris,the Societe Anonyme pour le Travail Electrique des Metaux,and at Philadelphia the Electric Storage Battery Companyalmost simultaneously discovered that a fusion of chloride of zincand chloride of lead would, when put under electro-chemicalaction, produce pure lead in crystaline form
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
