# #Mon Aug 09 12:00:46 CEST 2010 Slide__19-scKOcEd-WfYQ0GneCwQ_subTitle=Demonstration of the photoelectric effect, around 1904 Slide__19-scKOcEd-WfYQ0GneCwQ_footer=On loan from\: Museo per la Storia - Universit\u00E0 di Pavia Slide__19-scKOcEd-WfYQ0GneCwQ_title=Photoelectric Selenium Cell