# #Mon Aug 09 11:59:44 CEST 2010 Slide__wgB2AKOcEd-WfYQ0GneCwQ_title=Part of an Experimental Setup by Walter Kaufmann Slide__wgB2AKOcEd-WfYQ0GneCwQ_subTitle=\ For studying changes in the mass of fast electrons, 1906 Slide__wgB2AKOcEd-WfYQ0GneCwQ_footer=On loan from\: Deutsches Museum M\u00FCnchen