|Cut cubes under oil.
This is a sample I prepared specifically for a film project, to make a 360-frame rotation image. It's ordinary scrap sodium from my anonymous supplier, but this piece has been carefully cut under oil to reveal a shiny surface. Because the vial it's in is not flame-sealed, oxygen will eventually works its way in and the sample will become oxidized. But for my purposes, as long as it stayed shiny for half an hour that's all I needed.
I chose this sample to represent its element in my Photographic Periodic Table Poster. The sample photograph includes text exactly as it appears in the poster, which you are encouraged to buy a copy of.
Acquired: 12 May, 2005
Text Updated: 8 December, 2007