Richard Feynman
The Feynman Lectures on Physics Volume 08 Disc 01
1962
lecture

#    Title    Time    Info  
1 Optics: The Principle of Least Time - Light 7:12
2 Optics: The Principle of Least Time - Reflection and refraction 4:43
3 Optics: The Principle of Least Time - Fermat's principle of leas... 10:55
4 Optics: The Principle of Least Time - Application of Fermat's pr... 19:22
5 Optics: The Principle of Least Time - A more precise statement o... 11:21
6 Optics: The Principle of Least Time - How it works 4:11
Total time 53:33