11. This recursive ray tracing added more realism to ray traced images. 12. This recursive ray tracing added more realism to ray traced images. 13. :I think you may be making a mistake in fixating on ray tracing . 14. A ray tracing of acoustic wavefronts propagating through the varying density of the ocean. 15. The paraxial approximation is used in Gaussian optics and " first-order " ray tracing . 16. GPGPU can be used for many types of embarrassingly parallel tasks including ray tracing . 17. Layout offers ray tracing , global illumination, and render output parameters. 18. Studies of wave propagation in plasmas using ray tracing method can be found in. 19. In distribution ray tracing , at each point of intersection, multiple rays may be spawned. 20. Distributed ray tracing removes these restrictions by averaging multiple rays distributed over an interval.