week 4 Dicussion

Question 4: What is polarized light?
Question 5: You get a new pair of sunglasses for your birthday. How can you tell whether they have polarizing lenses. (“Read the label” will not get you credit.)

Answer both questions. You must also cite at least one credible academic reference source in text and provide full end ref information in APA.
must be atleast 300 words.

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