New crystallography teaching tool

[Kevin Cowtan <cowtan@yorvic.york.ac.uk>]

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I've put a new teaching tool on the web: an Interactive Structure Factor
Tutorial. It uses a java applet and a series of scripts to teach
users about structure factors, phases, symmetry, and the relationship
between the structure factors and the electron density map. Magnitudes
and phases are represented by colours in the same way as the Book of
Fourier.

The URL is:

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

Kevin Cowtan