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Praseodymium - Periodic Table of Videos

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Uploaded by on Jun 25, 2008

Praseodymium is element number 59 on the periodic table. Its chemical symbol is Pr. More at http://www.periodicvideos.com/

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  • So it lowers the speed of light by 299,492,458 m/s?

  • you can. the speed of light constant assumes a perfect vacuum, so light travels slower in a non vacuum.

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  • @nintendowns

    It still travels with the same speed in different media, but not is a straight line.

  • @nintendowns

    it doesnt travel slower

    speed of light is a constant

    in a non vacume it bounces off many particles taking it longer to reach its destination

  • Is it Acylicate(Asilicate, I don't know) or Acrylate that slows down the speed of light?

  • @etraise2 Well it can be interesting if you want to analyse some data what came from a collision with a specific particle. This might effect the light and if you slow th elight down its easyer to analyse i suppose?

  • @nintendowns Slow down the speed of light? Why would you want to do that?

  • @liam7morris i was just joking liam ;)

    miss

  • @Bjo15 you cannot hear anything in a vacuum and you cannot get sound as there are no particles in a vacuum

  • @liam7morris thats tha zoundz in vacuuum

  • @Bjo15 You cannot have an exact figure it varies on a number of variables, atmospheric pressure for example.

  • @liam7morris 340.29 is the speed if sound

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