. Popular electricity magazine in plain English. table Kerosene Heatc It can also be used for other heating operationssuch as dressing tools, straightening and pipe and bars, bra :ing, soldei ing,» The installation of ten L500 lew. and two 1000kw. 60 cycle rotary converters by the ClevelandRailway Company is the largest 60converter installation in the world and, a<ins; to recent reports, is giving remarkablyfactory results. ;-- — X. u°u =□= D»CJ»DD n a i ^ COMPOSITE DETECTOR This detector is easy to make and is idealfor portable sets because of its compactness. Procure a piece of hollow gla
. Popular electricity magazine in plain English. table Kerosene Heatc It can also be used for other heating operationssuch as dressing tools, straightening and pipe and bars, bra :ing, soldei ing,» The installation of ten L500 lew. and two 1000kw. 60 cycle rotary converters by the ClevelandRailway Company is the largest 60converter installation in the world and, a<ins; to recent reports, is giving remarkablyfactory results. ;-- — X. u°u =□= D»CJ»DD n a i ^ COMPOSITE DETECTOR This detector is easy to make and is idealfor portable sets because of its compactness. Procure a piece of hollow glass tubing threeinches long and % of an inch in diameter. Thencut two strips of tinfoil an inch wide and aboutthree inches long. Put a piece of bare copperwire in the middle of each and roll up one of the rolls and force it into the glass circuit and sounder. The set includes one f1a30Copperwir€^^ Silicon . ?°3»°> hhkk rr* V Glass tube Composite Detector tube. Take a match and compress the tinfoiltight. Then take it put and do likewise withthe other roll and leave it in. Now put a pieceof silicon and iron pyrites in the tube and takethe other roll and force it gently against the top-most mineral. Connect up the detector andtap the glass tube until you hear the signals theloudest. Carefully disconnect and pour meltedsealing wax into each end. Perikon crystals of course could be used inplace of those mentio
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectri, bookyear1912
