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Excerpt from Measurement of Fiber Diameters by the Diffraction Method
To determine the constant of the eriometer and to obtain pertinent data on the performance of the instrument, comparative measure ments were made with the eriometer and with a microscope on fine wires and various textile fibers. For these measurements samples were prepared by mounting 5 to 10 fibers, or wires, parallel to one another and streched taut across an aperture in the center of a card board form. (fig. The ends of the fibers were held by soft wax. This cardboard form was properly mounted on the sample holder of the eriometer and secured in place by a little soft wax. These samples could be used with either instrument, inserted or removed as desired, without disturbing the arrangement of the fibers.
The microscope used in this work gave a magnification of approxi mately 100 diameters, and was equipped with a micrometer eyepiece. It may be recalled that the result obtained with the eriometer is the average diameter of such fiber lengths only which extend across the aperture of the eye. Hence, to obtain comparable data with the microscope, individual diameter measurements were made at inter vals of mm. Along the length of each textile fiber and covering a total length of approximately 5 mm. The mean of the individual determinations for all the fibers was taken as the average diameter of the sample. Inasmuch as the wire samples are very uniform in diameter, the range of uncertainty in the average as determined with the microscope is estimated to be within a few tenths of a micron. These samples were also very carefully measured with the eriometer, several determinations of the mean displacement 1 being made at different times, each determination representing 10 settings of the eriometer scale. Two determinations (10 settings each) of each textile sample were made.
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Measurement of Fiber Diameters by the Diffraction Method (Classic Reprint)
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Paperback. Zustand: New. Print on Demand. This book presents a detailed investigation into the use of diffraction methods to establish average fiber diameter and variability in wool and mohair samples. The author explores the use of the eriometer, a newly designed instrument that utilizes the principles of light diffraction to determine these measurements. Through a comprehensive analysis of the eriometer's design, theory, and performance, the book provides valuable insights into the instrument's accuracy, precision, and limitations. The author's findings demonstrate that the eriometer offers a rapid and reliable method for measuring average fiber diameter, while also providing valuable information on variability. The book's exploration of the eriometer's capabilities and potential applications makes it an essential resource for researchers and practitioners in the textile industry. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781527836235_0
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