New scaling law predicts how wheels drive over sand

When engineers design a new aircraft, they carry out much of the initial testing not on full-sized jets but on model planes that have been scaled down to fit inside a wind tunnel. In this more manageable setting, they can ...

Coffee-ring phenomenon explained in new theory

The formation of a simple coffee stain has been the subject of complex study for decades, though it turns out that there remain some stones still to be turned. Researchers at the University of Nevada, Reno have modeled how ...

Measuring forces with oscillations

Researchers at ETH Zurich have discovered a peculiar feature in oscillations similar to that of a child's swing. As a result, they have succeeded in outlining a novel principle for small, high-resolution sensors, and have ...

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