1. Although Fresnel did not know that electromagnetic waves are light , he managed to construct the first coherent light theory in the world .
2. Although Fresnel did not know that electromagnetic waves are light , he managed to construct the world 's first coherent theory of light .

Select your answer from the options. Are these two sentences paraphrases of each other?
OPT: a. no. b. yes....I think the answer is
b.