A field of 100 small particles drifts vertically on a dark canvas, with translucent gray circles drawn between any pair that comes within 100 pixels of each other. As particles move, their connecting arcs fade in and out based on proximity, creating a shifting network of temporary links. The animation runs via a custom d3-timer loop, using Canvas arc and fill operations per frame. Each particle’s horizontal position is fixed, while vertical velocity varies randomly, causing them to wrap around the edges.