My wife is an event organiser for the Society of Photo Optics Instrumentation and Engineering. This is the sort of stuff that gets presented at her conferences.
[youtube]http://www.youtube.com/watch?v=6Cf7IL_eZ38[/youtube]
A Day Made of Glass 2 has narrative explanation.
[youtube]http://www.youtube.com/watch?v=Sc8lzavmXOk[/youtube]
