File:Boiling Point Apparatus or Hypsometer.jpg
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English: Identifier: mapssurvey00hink
Title: Maps and survey Year: 1913 (1910s) Authors: Hinks, Arthur R. (Arthur Robert), 1873-1945 Subjects: Maps Surveying Publisher: Cambridge, University press 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: I. Aneroid Barometer. Text Appearing After Image: 2. Boiling Point Apparatus or Hypsometer. Determinaiion of Heights. ROUTE TRAVERSING 75 It is not safe to assume that the sea level pressure is thesame at two places fifty miles apart. Therefore if one wishesto disentangle the weather changes from the altitude changes,it is almost necessary to have a barometer stationary in altitude,as nearly as possible below the barometer which is being carrieduphill. The weather changes of pressure are given by theformer and applied to the latter ; what is left of change maybe ascribed to the variation in height of the travelling baro-meter. In many cases it is not possible to leave a barometer at thebase camp, to be read while the travelling barometer is away.One must then do the best possible by returning to the basecamp as soon as possible after the ascent, and determining thechange in the reading there which has taken place during theday. Thus, suppose that a climber reads his barometer at 4 a.m.before setting out, and records frequent readings 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. |
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| Author | Internet Archive Book Images |
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14774399991. It was reviewed on 18 July 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the No known copyright restrictions. |
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| current | 16:43, 18 July 2020 | | 1,162 × 1,040 (314 KB) | Jmx | Uploaded a work by Internet Archive Book Images from https://www.flickr.com/photos/internetarchivebookimages/14774399991/ with UploadWizard |
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