> "D. Blake" wrote: > > Loads of historical information here. I wish the illustrations were > better though. Still, the photos/diagrams are annotated well, and it > would be fun to see what the library has to offer. > http://www.ee.surrey.ac.uk/SSC/H2O2CONF/PStokes.htm I second the comment on the graphics, but the rest of it fills in some blanks. Thanks. Mike