. Elementary chemical microscopy . Fig. 75. Klein Orientating Apparatus. holding the stopper tightly in place by the tension spring /. A curved fmger, fastened by the screw A, holds the glass parts in the metal mounting and allows easy removal for cleaning. An index mark i upon the tube T furnishes a means of determining the amount of rotation of the object attached to k. The instru- ment is provided with two cells, one 10 millimeters deep and one 15 millimeters deep, and a special condensing lens K for observa- tions with converging polarized light. A Simple Device for Orientation, often perf
. Elementary chemical microscopy . Fig. 75. Klein Orientating Apparatus. holding the stopper tightly in place by the tension spring /. A curved fmger, fastened by the screw A, holds the glass parts in the metal mounting and allows easy removal for cleaning. An index mark i upon the tube T furnishes a means of determining the amount of rotation of the object attached to k. The instru- ment is provided with two cells, one 10 millimeters deep and one 15 millimeters deep, and a special condensing lens K for observa- tions with converging polarized light. A Simple Device for Orientation, often perfectly satisfactory, consists in cementing the object to the point of a needle or tiny glass rod and inserting the other end of the needle or rod into a mass of plasticine. The needle or rod can be moved in any direction and secured in place by gentle pressure of the fingers upon the plasticine. Solid angles of tiny crystals may 1 Manufactured by Voight and Hochgesang, Gottingen, Germany.
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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmicroscopy, bookyear1
