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Newton himself tried to explain colors of thin plates using the corpuscular theory , by supposing that his corpuscles had the wavelike property of alternating between " fits of easy transmission " and " fits of easy reflection " , the distance between like " fits " depending on the color and the medium and , awkwardly , on the angle of refraction or reflection into that medium .
 Newton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Newton