Mathematically, we know that the Fourier transform (FT) is a linear operator, so FT{f1+f2}=FT{f1} +FT{f2}. No mangled convolution.
Nick Brian H. Toby wrote: > I had to think for a bit: the Fourier transform of a sum is equal to > the sum of the terms transformed individually, so the G(r) for a > mixture is the weighted sum of G(r) for the components. > > Brian > > On Sep 27, 2006, at 9:05 AM, Andy Fitch wrote: > >> We have a question about pdf analysis. If my sample is two >> phase, so the diffraction pattern is the sum of two individual >> patterns, what does the G(r) show? Is it just the sum of two >> individual G(r)s or some mangled convolution between the two? > > -- Dr Nicholas Armstrong NIST-UTS Research Fellow ******************************************************************************* University of Technology Sydney (UTS), Australia ******************************************************************************* University of Technology,Sydney * Location: Bld 1,Level 12,Rm1217 P.O Box 123 * Ph: (+61-2) 9514-2203 Broadway NSW 2007 * Fax: (+61-2) 9514-2219 Australia * E-mail:[EMAIL PROTECTED] ******************************************************************************* National Institute of Standards and Technology (NIST), United States ******************************************************************************* National Institute of Standards and Technology * Fax: (+1-301) 975-5334 100 Bureau Dr. stop 8520 * Gaithersburg, MD 20899-8523 USA * *******************************************************************************