Dept of Mathematics, Tufts University
A hypertext document survey of the concept of curvature created as an undergraduate student at Brown University during the academic year 1995-1996 and discovered by a Google search in 2003 by Bob Jantzen while nosing around the web for information about Apollonius of Perga.
Its original web location was a part of the Brown University Juggling Club
website for many years
until it eventually died:
A copy has been put here at Villanova University for safekeeping with opening web page:
while this index file is:
This web document is certainly worthwhile keeping alive but needs a permanent
http://www-history.mcs.st-andrews.ac.uk/ for example.
For now all the relevant files are contained in a single zipped collection: curvature.zip.
A related article tied together by the
juggling connection with
Topology and Juggling
by Dan Margalit, Neil "Fred" Picciotto, Joseph Llobrera, Sarah Babineau
http://www.brown.edu/Students/OHJC/topology/ [now a dead link]