I submitted this because it's a neat and simple thing to make (although obviously watch out for the razor blades, using one to make a slit in heavy duty alumini

I submitted this because it's a neat and simple thing to make (although obviously watch out for the razor blades, using one to make a slit in heavy duty aluminium foil might be a better idea) abut also because the site is full of simple science toys. The polariscope is also fun and easy enough to make: https://scitoys.com/polariscope.html https://scitoys.com/polariscope.html