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Later , he coined the terms " linear polarization " , " circular polarization " , and " elliptical polarization " , explained how optical rotation could be understood as a difference in propagation speeds for the two directions of circular polarization , and ( by allowing the reflection coefficient to be complex ) accounted for the change in polarization due to total internal reflection , as exploited in the Fresnel rhomb .
 Fresnel
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Text: {0} 
Answer:
 Fresnel