41. The earliest conception of specular holography appears to be a 1934 United Kingdom patent by Hans Weil. 42. Snell's law is generally true only for isotropic or specular media ( such as glass ). 43. We assume only one light, no specular reflection, and uniform known ( approximated ) reflection parameters. 44. All these waves add up to give specular reflection and refraction, according to the Huygens Fresnel principle. 45. This configuration captures light from the maximum range of angles and minimizes light noise due to specular reflections. 46. Horizontally, the surface is sharply specular to maintain a 1.25-degree separation between views. 47. Further subroutines detect and exclude eyelids, eyelashes, and specular reflections that often occlude parts of the iris. 48. Lambertian reflection from polished surfaces are typically accompanied by specular reflection ( Phong, Cook-Torrance . etc. 49. The specular highlight often reflects the color of the light source, not the color of the reflecting object. 50. On metallic materials such as gold the color of the specular highlight will reflect the color of the material.
