. The London, Edinburgh and Dublin philosophical magazine and journal of science . he effect of suspended particles in thepath of the conduction current, is shown in fig. 1. Bx is aninsulated brass plate on which rests the platinum plate the platinum plate is spread the active material. Overthe whole is the lead sheet L, with its centre cut away, ex-posing an area of salt of 25 sq. cm. B2 is an insulated platewith a vertical movement and connected to the electrometerE. Both plates are enclosed in a metal box A, fitted with adoor on one side to admit the plates. Placing a thick layerof tho
. The London, Edinburgh and Dublin philosophical magazine and journal of science . he effect of suspended particles in thepath of the conduction current, is shown in fig. 1. Bx is aninsulated brass plate on which rests the platinum plate the platinum plate is spread the active material. Overthe whole is the lead sheet L, with its centre cut away, ex-posing an area of salt of 25 sq. cm. B2 is an insulated platewith a vertical movement and connected to the electrometerE. Both plates are enclosed in a metal box A, fitted with adoor on one side to admit the plates. Placing a thick layerof thorium salt (about 1 mm.) on P, charging the lower plateto 95 volts and separating the quadrants very shortly afterclosing the door of the surrounding box, the rate of leak wasfound to gradually increase but finally to reach a constant * Phil. Mag., Jan. 1899. Prof. Owens ori Thorium Radiatfdn. 363 maximum value. If some time was allowed to elapse betweenplacing the oxide in position and taking the observations theconduction current showed no increase with time. A sample Fig-. J
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectscience, bookyear1840
