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Measurements by the interferometric method on the thermal expansion of Jena glass 2954III down to 4°K

✍ Scribed by W.H. Keesom; Dobieslaw W. Doborzyński

Publisher: Elsevier Science
Year: 1934
Weight: 590 KB
Volume: 1
Category: Article
ISSN: 0031-8914
DOI: 10.1016/s0031-8914(34)80306-0

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✦ Synopsis

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 measurements by the comparator method. Small differences in the expansion coefficient appear to exist between different samples, either dependent on conditions as regards annealing or thickness of wall, or even independent from these.

From a comparison of the results of both series of measurements it would seem that the expansion coefficient of fused quartz decreases to 0, when approaching absolute zero.

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