AP 2: Light Wave

AP Physics 2: Light 1: Light Wave and Huygens’ Principle

• • http://www.wikiwand.com/en/Diffraction_formalism: Very nice interference and diffraction simulation based on Huygen's principle. 

  • Professor Lewin on the Dutch pronunciation of Huygens: http://www.youtube.com/watch?v=wENZmBofwSw (Update: MIT indefinitely removes online physics lectures and courses by Walter Lewin for good reasons. However, this video link is to a video segment posted by some other person, so the link still works. I do not condone Lewin's terrible behavior. For your safety, students should not contact Lewin in any way.) 

AP Physics 2: Light 2: Young’s Double-Slit Interference Experiment

AP Physics 2: Light 3: Double-Slit Interference Problem

AP Physics 2: Light 4: Single-Slit Diffraction

AP Physics 2: Light 5: Single-Slit Diffraction Problem

AP Physics 2: Light 6: Double-Slit Interference & Single-Slit Diffraction Patterns

AP Physics 2: Light 7: Diffraction Grating

AP Physics 2: Light 8: Diffraction Grating Problem