The Essence of Physics, at MacAdemia, University of California at Berkeley (Berkeley, CA), Saturday, September 1, 1990
    A Hypermedia approach to teaching Physics, at International IEEE/AP-S Meeting (London, Ontario, Canada), Tuesday, June 25, 1991:
    No abstract available.

    Note: This is my first ever computer presentation. It was given using HyperCard on an Apple Macintosh Portable (well, barely portable; it was not for another 6 months that Apple would ship the first PowerBook). The image was projected using an LCD-panel that had to be placed on an overhead projector.