The Crookes Radiometer

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Uploaded by on Mar 8, 2008

Via Wikipedia: "The Crookes radiometer, also known as the light mill or solar engine, consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of vanes which are mounted on a spindle. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity. The reason for the rotation has been the cause of much scientific debate."

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  • that wasnt a song

  • that wasnt a song :O :S :( :'(

  • dont like the music its creepy

  • WEEE!!!

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