Dear Tony, I think that you are right. d_theta in eq. 40 should be in radians and not in degrees. It’s nice that people are reading books carefully.
Radovan [iycr_square_web]<http://www.iycr2014.org/> Radovan Cerny Laboratoire de Cristallographie Université de Genève 24, quai Ernest-Ansermet CH-1211 Geneva 4, Switzerland Phone : [+[41] 22] 37 964 50, FAX : [+[41] 22] 37 961 08 mailto : radovan.ce...@unige.ch URL : http://www.unige.ch/sciences/crystal/cerny/rcerny.htm De : rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] De la part de Tony Wang Envoyé : vendredi 14 mars 2014 16:03 À : rietveld_l@ill.fr Objet : Figure 1.13 of Book Powder Diffraction Theory and Practice Dear Rietvelders, I might not be the first to ask this question, but I found the Figure 1.13 of book “Powder Diffraction - Theory and Practice” is problematic. The equation 40 on the previous page is correct. But the authors seems wrongly treated “Δθ” as angle not radian when plot Figure 1.13, therefore the y- axis in Figure 1.13 missed a factor of “Pi/180”. Thanks in advance if anyone could confirm this. Tony Wang Ph.D. of Physics, M.S. of Materials Science, B.S. of Solid-state Electronics Research Assistant | John de Laeder Centre Tel | +61 8 9266 7511 Fax | +61 8 9266 4190 Mobile | 0430868691 Email | tony.w...@curtin.edu.au<mailto:y.c...@curtin.edu.au> Web | http://www.curtin.edu.au<http://curtin.edu.au/> Curtin University is a trademark of Curtin University of Technology. CRICOS Provider Code 00301J (WA), 02637B (NSW)
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