11. That's called total internal reflection . 12. This is accomplished through frustrated total internal reflection , also known as evanescent field coupling. 13. In the case of total internal reflection , and are complex numbers representing the evanescent wave. 14. Similarly, phonons are also capable of producing evanescent waves in a total internal reflection geometry. 15. Total internal reflection was often used to avoid the light loss in reflection from a silvered mirror.16. Figure " DTIRC " ( Dielectric Total Internal Reflection Concentrator ) on the left shows one such example. 17. Such devices can be based on the Faraday effect, on birefringence, or on total internal reflection . 18. Acrylic rod, illustrating the total internal reflection of light in a multi-mode optical fiber . ]] 19. If the photons reside mainly in the higher index material, the confinement is due to total internal reflection . 20. This effect, called total internal reflection , is used in optical fibers to confine light in the core.
