12.05.2014

Stølum number timelapse river changing course science gif

Science in GIFs: Measuring the meanderiness of a river

The meanderiness of a river, its Stølum number, is defined as the length the water travels from source to finish (blue curve) divided by the direct distance (red line).  This can change chaotically as a river changes coarse, forming Ox bow lakes. The ratio is often found to converge to (but rarely exceed) 3.14, roughly pi. Via

5.14.2014

colour printing plates image science gif

Science in GIFs: How a color image is built up through a series of printing plates (taken from a 19th century manual on colour printing

4.04.2014

timelapse river changing course science gif

Science in GIFs: Timelapse of river changing course over 28 years