For all those who were wishing that the teacher would put a bigger piece of sodium in the water bath in the science lesson demostration. Scroll down to end to find the videos.
Thanks to the Grauniad’s? Bad Science column
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Woah! Cool.
*very* cool….. wish I had a private lake to try it out on…..
Fun
I hadn’t seen that before, but I’ve looked at Theodore Gray’s site before, and am totally envious of his Periodic Table 
The man is very cool 
And we like Wolfram in my family too (my dad has a Mathematica T-shirt or two).