Measurement of thermal expansivity of low-expansion glasses by interferometric methods: Results of an interlaboratory comparison
β Scribed by H. Imai; M. Okaji; T. Kishii; H. Sagara; H. Aikawa; R. Kato
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 441 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0195-928X
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Measurements were made by the interferometric method of F i z e a h-A b b e-P u 1 f r i c h on the thermal expansion of Jena glass 2954111 down to the temperature of liquid helium. Measurements were made relative to fused quartz and absolute. The results compare quite well with the results of measur
The linear thermal expansion coefficients of silver and palladium have been measured in the temperature range 20Β°K to 273~K by an interferometric method. Photomultiplier detection was used and gas pressure changes were employed to effect changes in optical path, permitting the detection of length ch