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 critical angle. The diagram below shows the light ...

In an optical fiber, the maximum angle from the ... for "total internal reflection." In contrast to the "acceptance angle," which is measured outside the fiber, the critical angle is a measurement ...

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 ...