Roughened glass slides and a spectrophotometer for the detection of the wavelength-dependent refractive index of transparent liquids.
We describe a method to determine the wavelength-dependent refractive index of liquids by measurement of light transmittance with a spectrophotometer. The method is based on using roughened glass slides with different a priori known refractive indices and immersing the slides into the  transparent liquid with unknown refractive index. Using the dispersion data on the glass material it is possible to find the index match between the liquid and the glass slide, and hence the refractive index of the liquid.
Thule Institute, University of Oulu, Finland. Ilpo.Niskanen@oulu.fi
Ilpo
I
Niskanen
Jukka
J
Räty
Risto
R
Myllylä
Veijo
V
Sutinen
Kiyofumi
K
Matsuda
Kazuhiro
K
Homma
Pertti
P
Silfsten
Kai-Erik
KE
Peiponen