Traité de la lumière
Chez Pierre vander Aa, marchand libraire, A Leide, 1690
146. This is the first publication of Huygens's theory of the properties of light. As opposed to the corpuscular theory of light adhered to by Newton's followers, Huygens developed a coherent wave theory of light that beautifully explained the laws of relection and refraction as well as double refraction and the polarization of light.