This is called total internal reflection (TIR). The angle of incidence when the angle of refraction is 90 o, and the ray changes from just refracting to total internal reflection, is called the ...

When light rays travel at an angle greater than the "critical" angle, which is determined by the medium, the light reflects back into the medium. When they are less than the critical angle (more ...

Light is often thought to reflect from a flat surface at the same angle at which it is incident ... an experiment showing that in total internal reflection a light beam acquires a lateral shift ...

Name the process happening to the ray at the point X. There is no light emerging from the prism at Y. Name the process happening to the light at Y. How does the speed of light change, if at all ...