That's the video from before they published (which is still interesting). There is also a more recent video[1] (post-publication[2]) that covers how they got th

That's the video from before they published (which is still interesting). There is also a more recent video[1] (post-publication[2]) that covers how they got the data (which supports the coulombic explosion hypothesis). While it is mentioned at the end of the newer video, I highly recommend watching the 500fps footage[3] of a drop of NaK burning (just before it explodes) on the top of water. There is a striking color change as it starts to interact with the water, and right the NaK explodes... the metal turns completely transparent. [1] https://www.youtube.com/watch?v=LmlAYnFF_s8 https://www.youtube.com/watch?v=LmlAYnFF_s8 [2] http://www.nature.com/nchem/journal/v7/n3/full/nchem.2161.html http://www.nature.com/nchem/journal/v7/n3/full/nchem.2161.ht... [3] https://www.youtube.com/watch?v=BIGMfai_ICg https://www.youtube.com/watch?v=BIGMfai_ICg