Mathematical and Physical Papers Volume 2

Mathematical and Physical Papers Volume 2

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1884 edition. Excerpt: ...in perfectly fixed positions (fig. 3). Little collars of cork were put round the tubes just above the bulbs, and pushed down into the upper end of the hollow so as to hold the thermometers firmly and prevent all motion of their bulbs. 32. Various methods of heating the central part of the conductor were tried. First, as in previous experiments, water in the central vessel was kept boiling either by a gas-lamp under it, or by steam blown into it from a separate boiler; then a complex system with a boiling fountain, by which I attempted to get a perfectly uniform stream of water at a constant temperature, as little short of boiling as possible, to flow through the open spaces between the different slips within the central vessel, was used during several experiments. Lastly, water filling the central vessel was kept at a very constant temperature, near the boilingpoint, by a gas-lamp below it, regulated by a person watching the indications of a thermometer with its bulb fixed in the middle space between the slips, as nearly as possible in the centre of the compound conductor. This last I found to be by far the best plan, and I used it in all subsequent experiments in which any external application of heat to the conductor was required. 33. Each cooler was divided into four compartments by partitions of tin-plate not shown in the drawing, stopping all communication from one to another, except through the spaces between the different slips composing the conductor. A constant stream of cold water ( 22), introduced by the compartment nearest to the middle of the conductor, and drawn off by an overflow pipe, from a compartment next the end, was thus forced to flow all through among the different slips, and, as I found by placing thermometers in...show more

Product details

  • Paperback | 132 pages
  • 189 x 246 x 7mm | 249g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236578732
  • 9781236578730