sentence: Polarized sunglasses stop photons swinging up and down from passing.
sentences_before: The last usable property of a photon is its polarity. If you saw a giant photon coming straight at you, it could appear as a swath whipping vertically, horizontally, or somewhere in between.
sentences_after: This is how they reduce glare as light bouncing off of surfaces tend to fly that way.
concept_name: polarized sunglass
headings: Photon Properties
categories: Basic physics ideas Electromagnetism Light Elementary particles