We take digital images for granted these days—hell, you're looking at dozens right now. But when you stop and think about how the 3D world can be represented so neatly by 1D data stored on a hard drive, it's really utterly amazing.

In this video, Mike Pound explains how digital images really work. They're perhaps not as fluffy and user-friendly as you might think, at least at the computer-level: they're not neatly stored as a 2D matrix, but instead as a long list that goes on and on and on and on... Anyway, over to Mike to explain how all these images are really stored. [Computerphile]