The book Electric Lighting Microform was written by author Th Du Moncel Here you can read free online of Electric Lighting Microform book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Electric Lighting Microform a good or bad book?
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61. ing is correct only up to a certain point, for the conditions of maximum intensity of a current with or without derived INCANDESCED T LAMPS. 2 1 5 currents are well known, and the arrangement of the gene- rator in any given case is indicated perfectly by Ohm's formulae. As regards this matter, we do not think that Edison can discover anything more than we know already : and we believe that it is rather by the material arrangements of his lamp that he will have any chance of arriving at the ...solution he is seeking. Now Edison's lamp, which has many very different forms, consists of the following : The principle of the lamp, which is represented in Fig. 61, is the incandescence of a spiral of platinum wire a alloyed with iridium. And in order to prevent the spiral from burn- ing when its temperature exceeds a certain point, Edison places within the spiral a metallic rod G, which by dilating causes a contact to be made at z, by means of the lever s, precisely at the moment when the heat is about to reach that degree.
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