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#Mon Aug 09 11:59:44 CEST 2010
Text__07y2sKOcEd-WfYQ0GneCwQ_title=
Text__07y2sKOcEd-WfYQ0GneCwQ_text=Einstein discovered that clocks tick slower when they move fast. <br><br>But you only notice this when moving very fast - like the muons.