Measuring the refractive index of sugar solution through the stage of science process skills

Abstract

Refractive index practicum in sugar solution medium is carried out with the limitation of measuring the refractive angle of light using one type of solution, namely laboratory-scale sugar solution. The purpose of this study was to test the development of refractive index practicum tools for limited use with specifications of 10-watt lamps, 0°-90° arc scale, laser arc arm with a wavelength of 589 nm, laser chamber, vertical regulator position, limiting media in the form of glass and parallelogram-shaped solution cross-section. The variables used were solution concentrations in the 15% - 75% range and with incidence angles of 15°, 25°, and 35°, respectively. The results showed that the refractive index practicum tool has the advantage that it can be used more precisely both in light and darkness. The light used uses a laser with a wavelength of 549 nm and can measure the refractive index of a solution. The measurement results obtained the refractive index gradient value of the sugar solution at each concentration. The use of tools based on the processes science skills students in implementing activities practicum bias index in sugar solution.