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Abstract

Two different interference refractometers and one air parameter set-up are simultaneously operated in a temperature-stabilized casing of a length comparator. They allow absolute and relative measurements and calculations, respectively of the refractive index of air to be carried out for continuous interferometric length measurements. Measurement results are presented which were obtained under optimized environmental conditions. In addition, sources of disturbances are described which can significantly influence the measurements of the refractive index of air, and consequently may influence the accuracy of interferometric displacement measurements.

Additional information

Authors: PIELES H, PTB Braunschweig (DE)
Bibliographic Reference: Aricle: Air refractometry in a length comparator and the response to changes in the measurement environment, 1998, 1-19
Record Number: 199910370 / Last updated on: 1999-03-12
Category: PUBLICATION
Original language: en
Available languages: en
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