论文信息 - Determination of Absolute Values of Refractive Index of Liquids Using an Interferometric Method

Determination of Absolute Values of Refractive Index of Liquids Using an Interferometric Method

A novel interferometric technique for measuring the refractive index of transparent liquids to a high degree (10−5) of accuracy is presented. This technique permits studying transparent solutions, such as aqueous solutions of salts, biological agents, organic solvents etc. The measuring principle is based on the comparison of two interferometric measurements of mirror displacements, one of which is performed in the liquid and the other one in air. Sources of experimental error are discussed and technical details are described so that the apparatus can easily be constructed at low cost in a modest laboratory.

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