Polarisation teachers notes
The analogy of waves in a string passing through a slit is often used to introduce the concept of polarisation. Design an experiment to test if you can actually polarise a wave in a string and if the amplitude of the wave passing through an angled slit is given by Aocosθ. I haven't tried this one myself yet but I'd try with something like a climbing rope and a slit made of two shiny poles. Photograph a pulse going in...