Wikipedia:Featured picture candidates/Argon ice 1.jpg

Argon ice

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

• Support as nominator — Waerloeg 09:33, 22 June 2007 (UTC)
• Comment. Nominated before, less than two months ago Wikipedia:Featured_picture_candidates/Argon_ice, and failed. Nothing much has changed since then, and renomination comes too early. --Dschwen 10:32, 22 June 2007 (UTC)
• I don't think that caption is correct. You can't see gas; that "vapor" pouring out to the right may be little liquid drops of argon, or even little liquid drops of water condensed from the air (as you can also see around the tongs). Either way, not a gas. Read about this common misconception, and also see Condensation#Condensation_of_water_in_nature. — BRIAN0918 • 2007-06-22 13:44Z
  • I believe some gases are visible. For example, chlorine gas appears yellow/green. However I don't think argon is one of those few that are visible in a gaseous state. -- Moondigger 02:13, 24 June 2007 (UTC)
    • Yes, sorry for being confusing - some gases have color, but argon gas doesn't. — BRIAN0918 • 2007-06-24 12:59Z
• Oppose per the above discussion. - Mailer Diablo 02:27, 29 June 2007 (UTC)

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