Item no.: 15280-88 Function and Applications Supplementary equipment set for the sets Optics 1 (15276-88) and Optics 2 (15277-88). Together with the sets Optics 1 and 2 and the optional equipment TESS Optics color mixing, it is possible to performe 99 student experiments in total: Interference (4 Experiments) Diffraction from unidimensional objects (8 Experiments) Diffraction