The London, Edinburgh and Dublin philosophical magazine and journal of science . h as to produce adeflexion of 1000 millims. on the scale for a potential-difference of one volt between the quadrants. In measuringthe induced radioactivity, bare copper-wire No. 24 was ex-posed in the open air by means of specially-constructedinsulating supports (fig. 1) attached to a series of bamboopoles erected at convenient distances. The wire was chargedoy a small Toepler Holtz Electrical Machine driven by awater motor, which maintained a potential of from eight toten thousand volts. The insulator shown in f
The London, Edinburgh and Dublin philosophical magazine and journal of science . h as to produce adeflexion of 1000 millims. on the scale for a potential-difference of one volt between the quadrants. In measuringthe induced radioactivity, bare copper-wire No. 24 was ex-posed in the open air by means of specially-constructedinsulating supports (fig. 1) attached to a series of bamboopoles erected at convenient distances. The wire was chargedoy a small Toepler Holtz Electrical Machine driven by awater motor, which maintained a potential of from eight toten thousand volts. The insulator shown in fig. 1 consisted of a brass .tube* Rutherford, Phil. Mag-, xlix. p. 1 & p. 161 (1900). Excited in Air at the Foot of Waterfalls. 421 about 20 centimetres long, closed at one end and having a bell-shaped opening at the other. Into this tube an ebonite rodwas screwed which could be easily removed when it wasnecessary to renew its surface. Hooks fastened to the tubeand to the ebonite rod provided for the support of the insu-lator and the suspension of the wire. Kk. 1. Fig.
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Keywords: ., bookcentury1800, bookdecade1840, bookidlondon, booksubjectscience
