Category Archives: APS Physics

Setting Temporal Boundaries for Sound Waves

A magnet-and-coil system reveals how acoustic waves reflect and refract when the host medium suddenly changes elasticity. Continue reading

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Gated Flows in Charged Channels

Electrically patterning the walls of a nanochannel could provide a route to creating “valves” that abruptly alter the speed at which a charged fluid flows through a nanofluidic device. Continue reading

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Viewing Fast Vortex Motion in a Superconductor

A new technique reveals high-speed trajectories of oscillating vortices and shows that they are 10,000 times lighter than expected Continue reading

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Predictions for Small-Scale Turbulence

A statistical tool tests the long-held assumption that small-scale turbulence is isotropic. Continue reading

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Crystallizing the Path Toward a Nuclear Clock

Researchers have made the most precise measurement to date of the excited nuclear state of thorium-229, a candidate isotope for an ultraprecise nuclear clock. Continue reading

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Glowing Algae Change Morphology to Avoid Light

Bright light triggers the chloroplast of a bioluminescent algae to fold into a pattern that minimizes the chloroplast’s exposed area. Continue reading

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An Astronomer’s Appeal for Satellite Regulation

Samantha Lawler would like to see more done to reduce the detrimental impact of satellites on dark skies, telescope data, and publicly funded research. Continue reading

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Adding Certainty to Plutonium’s Fission Yield

A first-of-its-kind measurement reveals the energy spectrum of the neutrons produced during the fission of plutonium, a common nuclear fuel component. Continue reading

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Spider-Inspired Microphone Detects Tiny Gusts of Sound

A small device senses sounds using a spiderweb-like design—a strategy that could lead to chip-size microphones that are less affected by thermal noise. Continue reading

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A Better Way to Charge a Quantum Battery

Coupling the charger and battery to a common reservoir induces a direct flow of energy into the battery. Continue reading

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