The London, Edinburgh and Dublin philosophical magazine and journal of science . removed afteradjusting, to be cleaned, and replaced without spoiling theadjustment. The liquid could then be poured into the vesselimmediately after refixing the plates, so that there would bemuch less time for them to get dirty again than in the oldarrangement. (3) To improve the surface of the plates. (4) To increase the rapidity of alternation of the currentso as to reduce the polarization. With the rate of alternation already used (about 60 persec.) the balance-point with the very thin layers of waterwas not q
The London, Edinburgh and Dublin philosophical magazine and journal of science . removed afteradjusting, to be cleaned, and replaced without spoiling theadjustment. The liquid could then be poured into the vesselimmediately after refixing the plates, so that there would bemuch less time for them to get dirty again than in the oldarrangement. (3) To improve the surface of the plates. (4) To increase the rapidity of alternation of the currentso as to reduce the polarization. With the rate of alternation already used (about 60 persec.) the balance-point with the very thin layers of waterwas not quite steady, and it was thought that this was prob-ably due to slight polarization. The new arrangement for holding the plates is shown infig. 5. My best thanks are due to Professors Heaton andRobinson, of University College, Nottingham, for the use oftheir workshops while I was making this apparatus. the Conductivity of Liquids in Thin Layers. 267 Condition (1) is fulfilled by attaching the upper plate Ato a steel rod r which slides without turning in the twov% vx v2. Fk. VS 3 Diagram of Second Form of Apparatus. \ nat. size. Condition (2) is fulfilled thus :—The shaft of the upperplate has a \ in. hole bored in it, and slips without shake on tothe reduced end of the steel rod r, and is fixed by a set-screwwhich screws into a small hole in the rod and draws the shafttight up against the shoulder at the same time. The lowerplate B screws on to an ebonite rod e± which is attached bymeans of the iron screw s± to the iron plate Px ; si passesthrough a hole much larger than itself so as to admit of somelateral adjustment. The plate Pj is fixed laterally by thethree levelling-screws which rest, by hole slot and plane, on 2<58 Mr. Gr. B. Bryan on the Determination of three ebonite pings e2, e^ e2. After adjusting the lowerplate B parallel to the upper one the levelling-screws arefixed by lock-nuts, and the plate can then be removed andreplaced without impairing the adjustm
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectscience, bookyear1840
