Chemical Abstracts Volume 9, No. 1

Chemical Abstracts Volume 9, No. 1

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 edition. Excerpt: ... is justifiable only when the latter happens to lie in a region where lighting gas is not available. G. N. Tbrziev. Gas flames. Anon. Chem. News in, 8-9(1915).--Review of gas flames in general and discussion in detail of device of G. C. Ionides for burning gas with the exact proportion of air needed to obtain perfect combustion. C. A. Cole. Recent advances in indoor gas lighting. C. W. Jordan. Trans. Ilium. Eng. Soc. 9, 873-94(1914).--J. mentions improvements made in gas lighting appliances in recent years. Since the inception of the practical incandescent gas mantle no radical improvements have been made over the original chem. substance used, ThOs-CjOj. Improvements have been mainly of a physical nature, as in the development of the artificial fiber mantle. Upright or inverted mantles from such material show no noticeable shrinkage after 1000 hrs. burning, the c. p. remains near the initial and the deterioration in strength and flexibility is not nearly so rapid, nor as great as with cotton or ramie fiber mantles. All 3 types deteriorate in c. p. and in strength after burning for definite periods. In order to det. the exact cause or causes of such deteriorations, expts. were made using a mantle from each type and from the initial photomicrographs taken after burning 500, 1000, 1500, 2000, 6000 and 6680 hrs., resp., the artificial fiber mantle, as stated above, showed the best performance. Similar photomicrographs were made to note the physical changes occurring in the 3 types: (1) When ignited from the nitrate form (in the case of the artificial fiber from the hydrate form); (2) after hardening, and (3) after 2000 hrs. continuous burning. In this way the increasing fragility and progressive losses in c. p. were detd. A discussion of...show more

Product details

  • Paperback | 872 pages
  • 189 x 246 x 44mm | 1,524g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236766121
  • 9781236766120