File:Image from page 78 of "Practical methods of organic chemistry" (1901) (14584927070).jpg
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editDescriptionImage from page 78 of "Practical methods of organic chemistry" (1901) (14584927070).jpg |
Identifier: practicalmethods00gatt Title: Practical methods of organic chemistry Year: 1901 (1900s) Authors: Gattemann, Ludwig. [from old catalog] Subjects: Publisher: [n.p.] Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: nous flame; whenthe glass becomes soft, a previously somewhat warmed glass rodis fused to it (Fig. 43, I). The flame is then applied to the tubeat a short distance from the opening, and as soon as the glass hasbecome soft the tube is narrowed by drawing it out suddenly (II).After breaking off or cutting off the end of the capillary tube at<z, to allow the air to escape on further heating, it is heated at b,when the tube is softened at this point it is drawn out slightly, HEATING UNDER PRESSURE 59 the heat is applied just below b, it is drawn out again, and soon; the result is that the form of the end of the tube graduallychanges from a cylinder to a sharp-pointed cone. The narrowestpart of the latter is then heated with a not too large flamewithout drawing it further. The soft glass melts together, andthere is thus obtained a thick-walled capillary tube which ismelted off at the proper place (III). Figure 44 shows thesealed portion of a tube in its natural size. In the formation of Text Appearing After Image: ' Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work. |
Date | circa |
Source | Image from page 78 of "Practical methods of organic chemistry" (1901) |
Author | Internet Archive Book Images |
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19 February 2016
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