Image:Prepex2.svg
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Perpetual motion experiment
Licensing
{{PD-self|date=November 2007}}
{{Copy to Wikimedia Commons|bot=Fbot|priority=true|date=March 2012}}
{{Valid SVG}}
Perpetual motion experiment
{{PD-self|date=November 2007}}
{{Copy to Wikimedia Commons|bot=Fbot|priority=true|date=March 2012}}