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