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Caesium or Cesium - Periodic Table of Videos

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Uploaded on Aug 10, 2009

Here it is - five grams of caesium in water... But did you know caesium (aka cesium) is also used to define the length of a second?

For extra footage and replays of the reaction visit http://www.youtube.com/watch?v=pWXQ2t...

More chemistry at http://www.periodicvideos.com/
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Periodic Videos films are by video journalist Brady Haran

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