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The theoretical implications of electromagnetism , particularly the establishment of the speed of light based on properties of the " medium " of propagation ( permeability and permittivity ) , led to the development of special relativity by Albert Einstein in 1905 .
 Albert Einstein
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Albert Einstein