Wikipedia:Featured picture candidates/Argon ice 1.jpg

 
A small piece (~2 cm long) of rapidly melting argon ice simultaneously shows the three common phases of matter: solid, liquid and gas. Liquid is flowing off at the bottom of the ice which has been frozen by allowing a slow stream of the gas to flow into a small graduated cylinder which was immersed into a cup of liquid nitrogen.
Reason
It's a fine picture that nicely illustrates three common phases of matter in an interesting way (even if argon gas is colourless). It's not the prettiest but it is elegant.
Articles this image appears in
Phase transition, Argon
Creator
Deglr6328

Not promoted --Raven4x4x 08:40, 30 June 2007 (UTC)[reply]