Hi! I want to conduct an experiment to investigate the effect of sucrose concentration on refractive index using a laser pointer however I would like to complicate this experiment as this is just a simple how x affects y experiment. It may also seem to straight forward as obviously higher concentration would have a higher refractive index and I can only apply snell's law on this. I am looking forward to achieving an actual mathematical relationship between the two variables. Is there anyway I can expand on this idea? Perhaps to find an optimum property? Or investigate more independent variables? Any suggestions would be appreciated greatly! Thank you.