. Comparative sensitiveness of some common detectors of electric oscillations . inclosed in its case, so that it was foundimpossible to test it fairly at any except very short wave lengthswithout taking it completely to pieces. The circuits were arranged as shown in Fig. 2, the vacuum valvebeing coupled by its own coils to circuit 77. Signals were takenalternately on the perikon, adjusted for maximum strength ofsignal, and on the vacuum detector, one detector circuit beingremoved when the other was in action. At a wave length of 350meters and with a decrement of the incoming signals of , t
. Comparative sensitiveness of some common detectors of electric oscillations . inclosed in its case, so that it was foundimpossible to test it fairly at any except very short wave lengthswithout taking it completely to pieces. The circuits were arranged as shown in Fig. 2, the vacuum valvebeing coupled by its own coils to circuit 77. Signals were takenalternately on the perikon, adjusted for maximum strength ofsignal, and on the vacuum detector, one detector circuit beingremoved when the other was in action. At a wave length of 350meters and with a decrement of the incoming signals of , theratio of sensitiveness of the perikon to that of the vacuumdetector, as determined by the variable coupling method, wasalmost exactly two to one. For a wave length of 900 meters theperikon appeared to be at least ten times as sensitive as the vacuum Austin.] Detectors of Electrical Oscillations. 539 valve. As there is no reason to believe that the vacuum detectorwould change its sensitiveness with frequency, this difference isalmost certainly due to insufficient - E
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradiote, bookyear1910
