Why Are Pixels Square and Lenses Round

This video, created by Integrated Geospatial Education and Technology Training Project (iGETT), covers why pixels are square and lenses are round. The video discusses the following questions: why are pixels round, can pixels be shapes other than square, why are lenses round, and why aren't lenses square? The end of the video includes a recap of these questions with answers. References are also included. The video runs 12:27 minutes in length.