interesting

evaluation's http://www.yoism.org/?q=node/22

Waters strange materials http://www.dailykos.com/story/2009/9/20/784641/-Pique-the-Geek-20090920.-Water:-You-Should-Have-Never-Seen-It

Old and new elememts http://en.wikipedia.org/wiki/Classical_element

http://periodicvideos.com/

http://en.wikipedia.org/wiki/Elementary_particle