Abstract

For the purpose of studying anomalies in the index-temperature relation of transparent liquids, a Jamin interferometer has been developed using special control equipment for accurate constant-rate temperature variation. Simultaneous recording of optical and thermal changes are made on a constant speed paper tape. An estimated precision of 0.7×10−6 index units per °C is to be compared with an actual reproducibility of 1 to 2×10−6 index units per °C.

© 1948 Optical Society of America

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