The first law of refraction states that the incident rays, refracted rays, and the normal to the interface at the point of incidence, all lie in the same plane. The ratio of the sine of the angle of ...

Researchers have developed a new type of laser beam that doesn't follow long-held principles about how light refracts and travels. The findings could have huge implications for optical communication ...

Light bends when travelling through a concentration gradient of sugar in water. The top layer of liquid is pure water while the bottom layer is concentrated sugar water. In these layers, there is no ...

Abu 'Ali Al-Hasan bin Al-Haytham (965-1040 C.E.) was one of the most eminent physicists, whose contributions to optics and scientific methods are outstanding. Known in the West as Alhazen, Ibn ...