Lecture 13: Global Illumination & Path Tracing (12)
ChangyiYang
A very interesting point that many may ignore is the last few words: without change in frequency. There are special cases when reflection does change the frequency, for example, the Compton effect, in which reflection may reduce the light frequency.
longh2000
It is also possible that lights leave also on different side of surface because of different material types both sides of surface, where this is the refraction process discussed in the next lecture.
A very interesting point that many may ignore is the last few words: without change in frequency. There are special cases when reflection does change the frequency, for example, the Compton effect, in which reflection may reduce the light frequency.
It is also possible that lights leave also on different side of surface because of different material types both sides of surface, where this is the refraction process discussed in the next lecture.