New measurements of liquid helium temperatures: II. The vapour pressure curve of liquid helium

✍ Scribed by G. Schmidt; W.H. Keesom

• Publisher: Elsevier Science
• Year: 1937
• Weight: 273 KB
• Volume: 4
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(37)80194-9

✦ Synopsis

New measurements on the vapour pressure curve of helium were made. They gave temperatures which throughout are slightly higher than those calculated according to the formulae which form the basis of the temperature scale 1932, to a maximum of 0.026 degree for helium II at 1.6 ~ K, and of 0.015 degree for helium I at 3.5~ Table gives a survey of the differences T--T1932.

The lambda-point was more accurately determined to lie at p = 3.83cmHg, T --2.186~ 0.002).