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#Mon Aug 09 11:41:20 CEST 2010
Slide__QqzbwKOaEd-WfYQ0GneCwQ_footer=<p>Ren\u00E9 Descartes\: Principia philosophiae, Amsterdam 1644</p>
Slide__QqzbwKOaEd-WfYQ0GneCwQ_subTitle=
Slide__QqzbwKOaEd-WfYQ0GneCwQ_title=Descartes\u2019 Theory of Light