Improved interpolation method suitable for very high-precision data applied to ge resistance thermometry
✍ Scribed by E. Godratt; A.J. Greenfield; Y. Schlesinger
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 557 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0011-2275
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✦ Synopsis
An improved method is proposed for eliminating the commonly occurring spurious ripples which arise from interpolation fits to very accurate data and have an unknown functional form. This method is illustrated by fitting an interpolation curve to a commercial Ge resistance thermometer characteristic. For data with a rms scatter of + 0.8 mK, an interpolation accuracy of about +-0.2-0.4 mK is achieved. This accuracy is about four times higher than that obtained from the generally used high-order, polynominal, least-squares fitting method. It is also explicitly shown that the proposed method is superior to other interpolation methods.