Reversible Contraction of Fused-Silica Helix Balance Ascribed to the Rise of Temperature

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概要

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• Rise of temperature causes contraction of a fused-silica helix balance (displacement of its rest point) Δl/l and its decrease in sensitivity ΔS/S. The measurement of each is shown to be about 1.4×10^<-4>/deg at near room temperature. The drift of rest point between 0° and 450℃ is also measured. These variations agree with the temperature coefficient of shear modulus of fused silica indicated in literature. Contrary to the generally accepted picture about the stability of fused-silica helix, these effects, when no constant temperature jacket is used, seriously affect the results of weighing. On the basis of quantitative experiments, the permissible limits of temperature variation and a method for controlling it are discussed.

• 社団法人応用物理学会の論文
• 1965-11-15

著者

• Ishimura Hajime

  Department Of Chemistry Faculty Of Industrial Arts Kyoto Technical University:(present Address) Facu

関連論文

• Reversible Contraction of Fused-Silica Helix Balance Ascribed to the Rise of Temperature

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