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#Mon Aug 09 11:50:52 CEST 2010
Text__lrnGoKObEd-WfYQ0GneCwQ_title=The Beginning of Modern Cosmology
Text__lrnGoKObEd-WfYQ0GneCwQ_text=<p>In 1917, Einstein introduces new field equations for the General Theory of Relativity. They include a <q>cosmological constant</q> and their solutions describe a closed universe of constant size. Einstein hopes to exclude the existence of a universe that contains no mass and yet still contains inertial forces. This universe would stand in contradiction to Mach\u2019s principle.</p> <p><br><a href\="http\://nausikaa2.mpiwg-berlin.mpg.de/cgi-bin/toc/toc.x.cgi?dir\=S250UZ0K&step\=thumb" target\="_blank">A. Einstein, Cosmological Considerations in the General Theory of Relativity</a></p>