Dutch Ph.D. student Mathijs van Ledden has demonstrated that the often used rule of thumb 'the calmer the water, the finer the bottom sediment' is not always true. In addition to the flow rate, a ...

Sand in an hourglass might seem simple and straightforward, but such granular materials are actually tricky to model. From far away, flowing sand resembles a liquid, streaming down the center of an ...

Over the past few years, Joep van der Zanden has created perfectly identical waves – 40,000 times – in a large ‘wave flume’ (channel). Using advanced measurements, he investigated the effect of these ...

ANN ARBOR, Mich.---Wind isn't acting alone in the geological process behind erosion, sand dunes and airborne dust particles called aerosols. The other culprit is electricity. By taking both factors ...