# #Mon Aug 09 11:51:49 CEST 2010 Slide__stqNEKObEd-WfYQ0GneCwQ_footer=On loan from\: Max Planck Institute for the History of Science, Berlin Slide__stqNEKObEd-WfYQ0GneCwQ_title=Manuscript from Ernst Gehrcke about the Clock Paradox Slide__stqNEKObEd-WfYQ0GneCwQ_subTitle=Appeared in\: Die Naturwissenschaften, 1921