- Mini Spectroscopes, Alan Schwabacher, University of Wisconsin–Milwaukee
- Video on Demand
- Lens Diffraction in Photography. Steve Perry. YouTube (2015). In this video, we cover everything you need to know about lens diffraction. From what diffraction is to how it applies to your photography, it's all covered.
- The Brightest Part of a Shadow is in the Middle. Veritasium. YouTube (2015). Why is there a bright spot behind spherical objects?