Accurate method for the determination of the refractive index of liquids using a laser

Refractive indices of water and several organic liquids have been determined by an accurate method using a He-Ne laser. The method is in principle simpler than those used normally for such measurements. The experimental arrangement presented here is capable of yielding results with an accuracy of the order of 2×10−5. Comparison between the measured values and precise published results shows that they are nearly same within experimental parameters.