An Electrical Thermometer for Determining Temperatures at a Distance
โ Scribed by BROWN, HORACE T.
- Book ID
- 109402760
- Publisher
- Nature Publishing Group
- Year
- 1881
- Tongue
- English
- Weight
- 464 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/023464b0
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
T H E availability of helium-3 has made the temperature region between 0.3 and l ยฐ K one of reasonable accessibility. Above 0.7 ยฐ K temperatures can be found from liquid helium-3 vapour pressure measurements. Below 0"7 ยฐ K, however, the vapour pressure rapidly becomes small, and reliable measurement
Table 1 Pumping speeds of the cryopump for H 2 and Ar with the cold trap at 4.2 K and 2.2 K respectively (Pumping speeds of N 2 and dry air are equal to those of Ar within 10%) Pumping speed, I s "1 Gas 4,2 K 2.2 K H 2 4 000 5 200 Ar 1 000 1 000 gas molecules even for low values of the sticking pro