The Becke line test needs to be performed at least once to determine which way the shading works. The results of the oblique illumination tests are located in Table I and Table II . Conclusions Two very simple techniques for measuring index of refraction were performed in this laboratory experiment. Refractive index profiles are more complicated for anisotropic, inhomogeneous, and dispersive materials. With anistropic materials, refractive index is a function of the direction of the electric field vector of the light waves.
Refractive index varies with position for inhomogeneous materials.
Refractive index profiles are very important in modern photonic equipment, such as fiber optics and optical circuits. Future experiments should discuss applications of refractometry in these areas and the effects of refractive index on the performance of modern optical devices. Samples were prepared in immersion oils of various refractive indexes. A perfect match was found for the glass using immersion oil with a 1.635 refractive index. Determining the refractive index of an isotropic mineral.