> polarization sensors that will be able to tell materials apart Video of Gavin Smith explaining polarization with a neat mechanical/visual demonstration: http

> polarization sensors that will be able to tell materials apart Video of Gavin Smith explaining polarization with a neat mechanical/visual demonstration: https://youtu.be/9SAzxlF57mc?feature=shared&t=128 https://youtu.be/9SAzxlF57mc?feature=shared&t=128 Not sure if he ever made the camera.