Links to websites that are of potential use in this course. If you find others that seem relevant, please let me know.

Crystal growth - There are a whole bunch of websites that show how to grow large crystals of things like sugar and CuSO₄.5H₂O, but these are not so much use to us. The following, however, do a reasonable job.

     http://www.xray.ncsu.edu/GrowXtal.html

     http://xrpc4.harvard.edu/xtalgrow.pdf

Crystal selection, mounting etc. - I have not seen anything on the web that adds in any useful way to what we cover in the labs. and lectures. Still, it seems that diffraction from feathers has some history. The following link explains all:

     http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Gregory.html

The illustrations for the Fourier indexing example mentioned in the lecture (2006/02/13) were generated by this Structure Factor applet written by Kevin Cowtan of the University of York:

     http://www.ysbl.york.ac.uk/~cowtan/sfapplet/sfintro.html

There is an excellent series of tutorials on the programs XPREP, XP, XS and XL on the program author's (George Sheldrick), web pages. Note that XS and XL are functionally identical to SHELXS and SHELXL. The former are part of the proprietary SHELXTL package while the latter are part of the free-for-academics SHELXL (no graphics) package.