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Autor(en): 
  • Nathan Augustus Cobb
  • Methods of Using the Microscope, Camera-Lucida and Solar Projector: For Purposes of Examination and the Production of Illustrations (Classic Reprint) 
     

    (Buch)
    Dieser Artikel gilt, aufgrund seiner Grösse, beim Versand als 2 Artikel!


    Übersicht
     
    Lieferstatus:   i.d.R. innert 5-10 Tagen versandfertig
    Veröffentlichung:  August 2015  
    Genre:  Ratgeber 
    ISBN:  9781332221288 
    EAN-Code: 
    9781332221288 
    Verlag:  Forgotten Books 
    Einband:  Kartoniert  
    Sprache:  English  
    Dimensionen:  H 229 mm / B 152 mm / D 2 mm 
    Gewicht:  67 gr 
    Seiten:  38 
    Zus. Info:  23:B&W 6 x 9 in or 229 x 152 mm Perfect Bound on White w/Gloss Lam 
    Bewertung: Titel bewerten / Meinung schreiben
    Inhalt:
    Excerpt from Methods of Using the Microscope, Camera-Lucida and Solar Projector: For Purposes of Examination and the Production of Illustrations For many years the writer has had microscopes mounted in this way and hereby testifies strongly in favor of this method of using the microscope. The system is exemplified in the Laboratory of the Division of Pathology and Physiology, and as experience has added improvements to each successive plant erected, it may be worth while to describe this recent outfit. The plan is carried out in cement and steel. See Fig. I. Below the building is a large block of cement weighing several tons. In this block of cement three T-girders, two of which are approximately eight inches in each dimension, arc imbedded vertically to the depth of about four feet. The central girder carries the microscope, together with certain accessory apparatus connected with the illumination of the object. This girder is much smaller and shorter than the other two, extending only about eighteen inches above the floor of the microscope room. The other two girders are mates and extend to within about eighteen inches of the ceiling of the room; in other words, project upward into the room about eleven feet. The building being constructed of wood, the floors were laid about the pillars after they had been set in the cement and the whole structure was then given sufficient time to settle into its permanent position. This usually occurs in the course of a few months. When everything is settled into position, an ordinary key-hole saw is run through the floor entirely around the contours of the girders, so that at the end of the sawing operation the girder entirely clears the flooring and floor covring by the width of a saw blade. See 3, 43, &c., Fig. 1. Needless to say the object of these girders is to afford attachment for all the necessary apparatus connected with the microscope. The girders at every part clear the walls of the building by a fair margin. It is however best to place all the girders as close to the microscope window as is convenient. The reason for this will be explained on a subsequent page. In the present instance, the distance between the girders and the window casings is about one inch. The general principle on which the accessory apparatus is attached to the girders is that of sliding metal sleeves that may be clamped in any desired position A sleeve of one-sixteenth-inch sheet metal surrounds the small central girder and projects outwards, that is toward the observer, sufficiently to form a base on which the microscope may rest This base is from one to two times larger than he horse-shoe base of the microscope. This gives a sufficient space so that the microscope can be readily arranged or different classes of work, - moved sideways in either direction, forward or backward. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

      



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