00000nam 2200000zi 4500 9.867533 CaOODSP 20221107162334 m o d f cr bn||||||||| 190123t19801981onca ob f000 0 eng d 066010914X (print) CaOODSP eng rda CaOODSP eng fre n-cn--- M38-13/80-20E-PDF M38-13/80-20E Kirk, Bradley W., 1952- author. An iris diaphragm-based interface for use in eriometry / B. Kirk. Ottawa, Canada : Canada Centre for Mineral and Energy Technology = Centre canadien de la technologie des minéraux et de l'énergie, 1980. ©1981 1 online resource (iv, 21 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier CANMET report ; 80-20E Cover title. "February 1980." Issued by: Minerals Research Program and Mining Research Laboratories. Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. "Eriometry, the estimation of the size distribution of a set of fineparticles from their group diffraction pattern, has shown considerable potential for industrial application. This report describes a new and inexpensive method for interfacing the eriometer to a mini-processor. The interface consists of an iris diaphragm placed in the diffraction plane with subsequent focusing onto a single photodetector. The system has the advantage of integrating over any angular variations in the diffraction pattern without requiring a complex photodetector. The interface is applicable to the sizing of monodisperse powders as well as to the determination of size distribution of polydisperse samples. Some potential problems which may arise in the application of this technique are also investigated"--Abstract, page i. Includes abstract in French. Particle size determination--Instruments Canada. Energy, Mines and Resources Canada. Canada Centre for Mineral and Energy Technology. Minerals Research Program (Canada) Mining Research Laboratories (Canada) CANMET report ; 80-20E. (CaOODSP)9.852792 PDF 3.32 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-13/M38-13-80-20-eng.pdf 307134