...be the corresponding value after refraction. Thus, v sin i = v' sin r, and sin //sin r = v-/v. Thus, the ratio of the sines of the angles of incidence and refraction will be constant, in accordance with Snell-s law. But, since the ratio is greater than unity when light...

...plane with the normal to the surface at the point of incidence. Law of Refraction. The law stating that the ratio of the sines of the angles of incidence and refraction are constant for the same media. Least Circle of Aberration. The smallest circle in which an object-point...

...of sines, establishing the relation of the angle of incidence to that of refraction. SnelPs law is "the ratio of the sines of the angles of incidence and refraction are constant for any two media." Up to 1666 refraction was held responsible for colored light. Newton...

...extraordinary refracted ray in this case lying in the plane of incidence and obeying the sine law. The ratio of the sines of the angles of incidence and refraction in this •case, is termed the extraordinary index of refraction. AVe will next consider the case in which...

...refraction. 11. The index of refraction is the ratio of the velocities of light in the two media, or the ratio of the sines of the angles of incidence and refraction. 12. The index of refraction is a constant for any two given media and for a given color. 13. When light...

...which makes its development exceedingly simple. (12). The presentation of the index of refraction as the ratio of the sines of the angles of incidence and refraction rather than the ratio of the velocities of light in the two media is to my mind unfortunate. Even if...

...refracted ray, and the normal to the refracting surface at the point of incidence are in one plane, (ii) The ratio of the sines of the angles of incidence and refraction is a constant, depending only on the nature of the media in which the light is propagated. It is important...

...ray, and the normal at the point of incidence, all lie in the same plane. 2. For the same two media, the ratio of the sines of the angles of incidence and refraction is constant for all corresponding values of these angles. 56. Index Of Refraction. — When a ray of...

...laws of single refraction : I. The planes of tJie angles of incidence and refraction coincide. II. The ratio of the sines of the angles of incidence and refraction is constant for the same two media. light in air is greater than in water ; by the emission theory...

...occasional paragraph had been devoted to this purpose. The definition of the index of refraction as the ratio of the sines of the angles of incidence and refraction and the corresponding trigonometric proof of the simple lens formula is in common use in many text...