# #Mon Aug 09 11:59:10 CEST 2010 Text__uttj0KOcEd-WfYQ0GneCwQ_text=

Einstein sends the publication of the Entwurf Theory to Ernst Mach. In an accompanying letter he emphasizes the role of Mach\u2019s \u201Cingenious studies about the foundations of mechanics\u201D and suggests the possibility of verifying the equivalence principle by observing the deflection of light rays.

Text__uttj0KOcEd-WfYQ0GneCwQ_title=Einstein Pays Tribute to Mach