The London, Edinburgh and Dublin philosophical magazine and journal of science . 16-8 2-66 43 30 •476 Middle plate at £ of whole Middle plate at -^ of whole distance from negative leg. distance from negative leg. 31 •9 •142 31 •9 •142 34 1-8 •285 34 1-5 •238 37 5-1 •809 37 3-4 •539 39 7-0 1-11 39 48 •761 41 8*7 1-38 41 5-7 •904 43 9-5 1-50 43 6-8 1-07 Middle plate -| of whole distance from negative leg. 31 9 •142 34 1-7 •269 37 3-5 •555 39 4-3 •682 41 5-6 •888 43 6-2 •983 62 Prof. J. A. Fleming on the The results of this Table No. 3 are plotted in the curvesNo. 3. These curves are to be interp
The London, Edinburgh and Dublin philosophical magazine and journal of science . 16-8 2-66 43 30 •476 Middle plate at £ of whole Middle plate at -^ of whole distance from negative leg. distance from negative leg. 31 •9 •142 31 •9 •142 34 1-8 •285 34 1-5 •238 37 5-1 •809 37 3-4 •539 39 7-0 1-11 39 48 •761 41 8*7 1-38 41 5-7 •904 43 9-5 1-50 43 6-8 1-07 Middle plate -| of whole distance from negative leg. 31 9 •142 34 1-7 •269 37 3-5 •555 39 4-3 •682 41 5-6 •888 43 6-2 •983 62 Prof. J. A. Fleming on the The results of this Table No. 3 are plotted in the curvesNo. 3. These curves are to be interpreted as follows :—Thetwo vertical lines P and N represent the two legs of the Table No. 3.—Curve No. 3. The middle plate was moved along- into different positions between thetwo carbon legs indicated by the horizontal distances, and at eachposition the current between the middle plate and positive electrode ofthe lamp is represented by the vertical ordinate of a carve. The severalcurves correspond to different working volts on the +Leg 1/10 1/4 1/2 3/4 Position of Plate between legs. 9/10 —Leg carbon horse-shoe. At various distances on the way from Pto N the milliampere current through a galvanometer con-nected between the middle plate, placed at that point, and the Edison Effect in Glow Lamps. 63 positive electrode of the lamp is represented by the magnitudeof the vertical ordinate of each curve. For every one of thedifferent voltages at which the lamp is worked, there is there-fore a curve representing by its ordinates this current strengththrough a galvanometer inserted between the middle plate,placed at these positions, and the positive electrode of thelamp, and it is seen that there is a minimum value for thiscurrent at a position equal to } of the whole distance betweenthe legs reckoned from the negative leg. Imagine the middle plate therefore connected through agalvanometer with the positive electrode of the lamp, and lett
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Keywords: ., bookcentury1800, bookdecade1840, bookidlondon, booksubjectscience
