http://www.metafilter.com/tags/valence Posts tagged with 'valence' at MetaFilter. Wed, 16 Jul 2008 18:33:18 -0800 Wed, 16 Jul 2008 18:33:18 -0800 en-us http://blogs.law.harvard.edu/tech/rss 60 http://www.metafilter.com/73371/Francium%2DGoes%2Dto%2DHollywood "<a href="http://www.periodicvideos.com/videos/introduction.htm">Welcome</a> to the "Periodic Table of Videos". Tables charting the chemical elements have been around since the 19th century - but <a href="http://www.periodicvideos.com/index.htm#">this modern version</a> will have a short video about each one."(YT <a href="http://www.youtube.com/periodicvideos">subscription</a>) <small>(via <a href="http://www.kottke.org/">kottke</a>)</small> tag:metafilter.com,2008:site.73371 Wed, 16 Jul 2008 18:33:18 -0800 atomicnumber chemistry electron mole neutron periodictable proton valence Kronos_to_Earth