Boston Layer-Lapse: Watch Boston at Different Times Layered Beautifully and Mezmorizingly (video)
Traditional time-lapses are constrained by the idea that there is a single universal clock. In the spirit of Einstein’s relativity theory, layer-lapses assign distinct clocks to any number of objects or regions in a scene. Each of these clocks may start at any point in time, and tick at any rate. The result is a visual time dilation effect known as layer-lapse.