Setup of the polarization experiment. The components are two mirrors (green and blue) and the detector (yellow). Simulated rays are shown in green, the light source is at the tip of the cone. The figure shows four positions for the light source and the corresponding rotation of the green mirror. The green mirror is positioned in such a way that all rays reach the blue mirror and the detector for every rotation angle of the source. An interactive version of this diagram is available in the online article.

An interactive version of this figure is available in the online journal.