didymium

  • Periodic table of the elements – 60 – Neodymium
    Podcast

    Neodymium

    8 April 2009

    One of a pair of elementary twins that now turns up in toys, lasers and powerful magnets

  • Periodic table of the elements – 59 – Praseodymium
    Podcast

    Praseodymium

    24 December 2008

    The 'green twin' from didymium safety glasses