The theme here is that of the connections between physics and philosophy, and the issues involved are brought out by focusing upon optics. In this way the ground is also being prepared for the transition to quantum theory. Through the phenomenological assessment of a series of experiments, for instance, in terms of the light-beam model, the Fermat principle, the wave model and photon imaging, the main lesson aims to equip the students with the ability to see different ideas in relation to each other and to appreciate the epistemological positions involved in various explanatory approaches.

Source: Waldorf Resources