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Light and Optics: Properties of Light, Polarization

How do polarized sunglasses work? Why can’t I read my computer screen when I’m wearing them? Why are they good for sunglasses?


Questions Answered:

How do polarizing filters work? What happens when two filters are held, one on top of another and twisted?


Topics Addressed:


Polarizing filters


Learn to use scientific equipment:

Polarizing filters (polarizing sunglasses can be substituted)


Materials Needed

polarizing filters/sunglasses, tv or flatscreen monitor (optional)


Preparation Time

order/gather supplies


NOTE: This activity is part of the Light, Optics, & Color Unit found here.

Light and Optics: Properties of Light, Polarization


    Answer Keys and Teacher Notes address most questions and issues that might arise in this study—you shouldn’t have to do any outside research unless you want to.

    Connect with me: If you have questions or problems, please let me know and I’ll get back to you as soon as I can.


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