Comparison of some platinum thermometers with the helium thermometer between 0 and −183°C

✍ Scribed by W.H. Keesom; B.G. Dammers

• Publisher: Elsevier Science
• Year: 1935
• Weight: 436 KB
• Volume: 2
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(35)90196-3

✦ Synopsis

w e e n 0 a n d --1 0 0 °C b e l o w t h e t h e r m o d y n a m i c scale, t o a n a m o u n t of a b o u t 0.04 degree a t --8 0 °C . B e t w e e n --1 2 0 a n d --1 8 3 °C t h e i n t e r n a t i o n a l t e m p e r a t u r e scale lies a b o v e t h e t h e r m o d y n a m i c scale. M a x i m u m d e v i a t i o n b e t w e e n --1 3 0 a n d --1 4 0 °C . A m o u n t of t h e d e v i a t i o n as s h o w n b y t h e f o u r first m e n t i o n e d t h e r m o m e t e r s 0.01 to 0.02 degree. § 1. Introduction. In Commun.

No. 239d we reported on the construction and the determination of the constants of a set of platinum thermometers which fulfil the requirements mentioned in the definition of the international temperature scale. In this paper the results are given of a comparison of them with the heliUm thermometer. § 2. Apparatus.

a. The helium thermometer 1). The bulb is of Jena glass 16 m,