15. Measurement of the refractive index of a material
rectangular glass or perspex block
ray box or optics lamp 1 cylindrical lens 1 single slit
A4 plain white paper
shaded or darkened conditions
Physical injury if tripping on an object.
Darkened or shaded laboratory – beware of tripping hazards as you will be working in reduced lighting. Ensure there is nothing on the floor which could be a hazard and make sure you only have the necessary equipment and apparatus on your work place.