Related topics: physical review letters

Amazon's white bellbirds set new record for loudest bird call

Biologist Jeff Podos at the University of Massachusetts Amherst, with Mario Cohn-Haft at the Instituto Nacional de Pesquisas da Amazônia, Brazil, report that they have recorded the loudest bird calls ever documented, made ...

Study reveals how mucus tames microbes

More than 200 square meters of our bodies—including the digestive tract, lungs, and urinary tract—are lined with mucus. In recent years, scientists have found some evidence that mucus is not just a physical barrier that ...

Chains of atoms move at lightning speed inside metals

A phenomenon that has previously been seen when researchers simulate the properties of planet cores at extreme pressures has now also been observed in pure titanium at atmospheric pressure. Chains of atoms dash around at ...

Researchers synthesize 'impossible' superconductor

Researchers from the U.S., Russia, and China have bent the rules of classical chemistry and synthesized a "forbidden" compound of cerium and hydrogen—CeH9—which exhibits superconductivity at a relatively low pressure ...

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Pressure

Pressure (symbol: p or P) is the force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure is the pressure relative to the local atmospheric or ambient pressure.

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