Just a bit of fun for Christmas - we "physics review" one of this year's hot Christmas gifts. No product endorsement (in fact it looks a bit "naff" we reckon)... Just talking a bit of festive physics. Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/#!/periodicvideos Sixty Symbols videos by Brady Haran