Activity: Polarisation 3D films and holograms
Here we will look more closely at the concept of the polarisation of light to understand why only 50% of light passes through a polarising filter, observe the effect of rotating polarisers, derive Malus' law, appreciate the role of polarisation in 3D movies and explain the principle of holography. Doing this at home? For this activity you need two polarisers. Simply take a pair of Polaroid sun glasses and break them...