Abstract

The indices of refraction of heptane and of aqueous solutions of glycol were measured over a range of temperature. It is shown that the indices of this pair of fluids can be matched exactly and hence that the optical discontinuity at the interface of the two phases can be eliminated over a range of temperature by varying the composition of the solution. The utilization of this matched pair of fluids for light transmission measurements through dispersions is discussed.

© 1960 Optical Society of America

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