. The Bell System technical journal . trOjt Fig. 7—The value of /3 during one cycle. Let the heavy line aboba, Fig. 9, be the trace of the ideal curve X = cos Oj/, 3 = -E(-i) T 1 cos m coi m (13) The curve followed by the value of Cs in equation (12) is then of theform shown by the light line acaca, which again is traced in the. Fig. 8—The vahie of 7 during one cycle. clockwise direction. When the apparatus is used for an actualmaterial having positive hysteresis, the loop is made narrower at theII axis by this distortion, but the amount of the decrease in width A BRA UN TUBE HYSTER

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. The Bell System technical journal . trOjt Fig. 7—The value of /3 during one cycle. Let the heavy line aboba, Fig. 9, be the trace of the ideal curve X = cos Oj/, 3 = -E(-i) T 1 cos m coi m (13) The curve followed by the value of Cs in equation (12) is then of theform shown by the light line acaca, which again is traced in the. Fig. 8—The vahie of 7 during one cycle. clockwise direction. When the apparatus is used for an actualmaterial having positive hysteresis, the loop is made narrower at theII axis by this distortion, but the amount of the decrease in width A BRA UN TUBE HYSTERESIGRAPH 301 can not be determined analytically without more accurate knowledgeof the condenser conductance as a function of frequency. The valueof equation (12), therefore, lies chiefly in giving the distortion to be

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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1