Simple, reliable, and sensitive interferometer for the measurement of the refractive index of liquids as a function of temperature.
We describe a very simple and inexpensive interferometer setup which provides high accuracy measurements of the refractive index (n) of liquids with temperature. A standard deviation sigma (n) =5.4x10(-7) has been observed in isooctane liquid when fitting n to a linear temperature variation.
Beysens
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Service de Physique du Solide et de Resonance Magnetique, Commissariat a L'Energie Atomique, B. P. No. 2, 91190 Gif-fur-Yvette, France.