Liquid helium lambda point transition

Forfatter/Opretter:

Alfred Leitner photographed this as part of his movie "Liquid Helium, Superfluid".

Kredit:

Own work by uploader., Photograph from my movie "Liquid Helium, Superfluid".

Shortlink:

https://dkwiki.dk/b/355a9

kilde:

Wikimedia Commons

størrelse:

1376 x 1410 Pixel (285148 Bytes)

beskrivelse:

When liquid helium is cooled down from 4.2K to the lambda point at 2.2K the liquid for a brief moment boils up violently.Suddenly, boiling ceases. This is the transition from the normal phase to the superfluid phase.

Licens:

Public domain

Kommentar på licensen:

The movie had U.S.copyright 1963, which expired and was not renewed:PUBLIC DOMAIN.