Desktop Poincare sphere - modelling polarized light

thingiverse

Here's an updated version of my Poincare sphere, with coordinates outside and a swivellable ball inside. It should be much easier to manipulate and use in demonstrations. The Poincare sphere is used for modeling the different ways light can be polarized: https://en.wikipedia.org/wiki/Polarization_(waves)#Poincar%C3%A9_sphere The sphere itself is present, and stokes axes (S1, S2, S3) are labeled with their extreme points (Horizontal, Vertical, Diagonal, Antidiagonal, Left Circular, Right Circular). I've also included parts to show the behavior of three common optical tools. A waveplate, a Faraday rotator, and optical rotation (which I call a 'sugar rotator') are shown. You can see how moving orientations of the waveplate or using left-handed sugar instead of right-handed sugar will change the behavior. More details here: https://tinkeringsdotorg.wordpress.com/2018/08/31/better-poincare-sphere/