Refractive-index measurements of ten liquids were made at nine discrete wavelengths over the 589–1674-nm spectral range using a Hilger-Chance refractometer with a modified viewing system. The total error in refractive-index measurement was considered to be ±3 × 10−4. In all cases, the variation in refractive index with increasing wavelength was found to be a smooth monotonically decreasing function that could be accurately fitted by the Cauchy formula. Constants for the latter have been given.

© 1983 Optical Society of America

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  1. P. R. Cooper, Appl. Opt. 21, 3413 (1982).
    [Crossref] [PubMed]
  2. P. Sacher, Cargille Inc.; private communication.

1982 (1)

Cooper, P. R.

Sacher, P.

P. Sacher, Cargille Inc.; private communication.

Appl. Opt. (1)

Other (1)

P. Sacher, Cargille Inc.; private communication.

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Figures (1)

Fig. 1
Fig. 1

Schematic of experimental arrangement.

Tables (5)

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Table I Cinnamaldehyde

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Table II Methyl and Ethyl Salicylate

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Table V Index of Refraction Fluids

Equations (2)

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n λ = [ n 0 λ + sin θ λ ( n 0 λ 2 sin 2 θ λ ) 1 / 2 ] 1 / 2 ,
n = A + B λ 2 + C λ 4 ,