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JH's comments

John Helliwell's sent me the following comments about
IT online... for circulation.

> (i) the chance for readers to make a math formula or computer program 
> work
> for them rather than look up tabulated data in increments and then
> interpolate is potentially very powerful for eg f' and f" values for 
> the
> elements (Cromer and Liberman calculation basically). Competitors 
> offering
> such material are the Centre for Xray Optics Berkeley (but its not very
> user friendly I would say, esp for crystallographers).
>
> (ii) i recently was at a talk on neutron reflectometry (Bob Thomas)
> Oxford Univ Chemist who used applets to do on the fly curve fitting of
> such data and highlight strengths and weaknesses of the method. Such 
> tools
> downloadable into a lecture presentation (he saiod it can't be 
> powerpoint)
> has a big potential for research and teaching of crystallography.
>
> (iii) Birkbeck Crystallography (Paul Barnes) had a stand at IUCr 1999
> selling CDs for space group symmetry tables. How their sales went 
> would be
> interesting. Also for the experts of IT and IT Tables (you, Brian
> Mcmahon and Nicola) view that would be
> interesting.
> More later.....

Syd
------
Professor Sydney R. Hall
School Biomedical & Chemical Sciences
University of Western Australia
Crawley, 6009  AUSTRALIA.
Ph: +61 (8) 6488 2725
Fx: +61 (8) 6488 1118
"Data data everywhere but not a thought to think!" - Theodore Roszak