TransactionsPublished under the care of the General Secretary and the Treasurer . eld and the supply of oilis small compared with that of the Petrolia 1 — 26 402 McLennan: radioactivity of gases. III. A Eadioactive Emanation in Crude Petroleum. In conducting the experiments with petroleum, the tests weremade with oil as fresh as possible, but as Petrolia is about 200miles distant from Toronto, twenty-four hours generalh elapsedfrom the time when the oil was pumped until measurements werebegun. The petroleum to be tested was contained in a large three-litre flask, D (Fig. 1), supporte
TransactionsPublished under the care of the General Secretary and the Treasurer . eld and the supply of oilis small compared with that of the Petrolia 1 — 26 402 McLennan: radioactivity of gases. III. A Eadioactive Emanation in Crude Petroleum. In conducting the experiments with petroleum, the tests weremade with oil as fresh as possible, but as Petrolia is about 200miles distant from Toronto, twenty-four hours generalh elapsedfrom the time when the oil was pumped until measurements werebegun. The petroleum to be tested was contained in a large three-litre flask, D (Fig. 1), supported in a water-bath. This flask wasconnected to a wash bottle E, partly filled with concentrated sul-phuric acid, and to a second flask, F, embedded in ice, for the pur-pose of condensing any vapors from the heated oil. The tube, G, wasfilled with phosphoric pentoxide, and the tube H, tightly packedwith glass wool. The vessel A. made of thin galvanized iron, 62 cmslong and 25 cms in diameter, was provided with an exploring elec- 7i ni^err-Kfn. TijBattery T»£aHh ^^lettrtnt^er. Fig. 1. trode, C, which was supported by an ebonite plug carrying a guardtube, B. The rod, C, was connected to one of the pairs of quad-rants of a quadrant electrometer of the Dolzaleck type, whosesensitiveness was such that a potential difference of one volt betweenthe quadrants gave a deflection of 1,100 mms on a scale at a dis-tance of one metre. Throughout the experiments the cylinder. A,was maintained at a potential of 168 volts by a battery of smallstorage cells, and the conductivity of the gas which it containedwas determined by measuring the saturation current to the exploringelectrode. This saturation current when the cylinder. A, wasfilled with ordinary dry air was about scale divisions perminute. After heating the water in the bath to the boiling point. McLennan : radioactivity of gases. 403 air was bubbled for fifteen miimtes through the oil and drawn intothe cylinder, A, by means of a w
Size: 2016px × 1239px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidtr, booksubjectelectricity
