Although Fresnel did not know that light waves are electromagnetic , he managed to construct the world 's first coherent theory of light . Although Fresnel did not know that light waves are electromagnetic , he managed to construct the first coherent light theory in the world .
Walaupun Fresnel tidak tahu bahawa gelombang cahaya adalah elektromagnetik, beliau berjaya membina teori koheren pertama di dunia cahaya. Walaupun Fresnel tidak tahu bahawa gelombang cahaya adalah elektromagnetik, beliau berjaya membina teori cahaya koheren pertama di dunia.