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Monday, June 5, 2023

This Week in Physics — A New Science for Describing Unhealthy Online Environments

 

This Week in Physics Magazine — June 5, 2023

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A New Science for Describing Unhealthy Online Environments

Elisabeth Wilhelm – June 5, 2023

A theory derived from nonlinear fluid dynamics is able to reproduce the formation dynamics of online hate communities—offering insights that could inform public policies.

Research News

Humans Help Computers Spot Bursts from Space

June 1, 2023

Citizen scientists combed through radio astronomy observations to identify new sources of transient emission that computer algorithms overlooked.

Focus

Environmental Noise Makes a Sensor More Sensitive

June 2, 2023

By exploiting a phenomenon called stochastic resonance, sensors can perform better in a noisy environment than in a noise-free setting.

synopsis

Another Way for Black Holes to Evaporate

June 2, 2023

The gravitational fields of black holes and other compact objects are strong enough to wrest pairs of particles and antiparticles out of the vacuum and into existence, causing the objects to decay.

synopsis

A Textbook Dirac Semimetal

June 1, 2023

Researchers have synthesized a chalcogenide compound that has the electronic structure of an ideal Dirac semimetal—which could facilitate the study of this exotic class of materials.

synopsis

Bond Density Not Strength Controls Polymer Stickiness

May 31, 2023

Experiments show that the sticky behavior of so-called associative polymers is controlled by the density of bonding structures, contradicting theoretical predictions.



 

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Tuesday, May 30, 2023

This Week in Physics — Realizing the Einstein-Podolsky-Rosen Paradox for Atomic Clouds

 

This Week in Physics Magazine — May 30, 2023

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Realizing the Einstein-Podolsky-Rosen Paradox for Atomic Clouds

Margaret D. Reid – May 30, 2023

A new demonstration involving hundreds of entangled atoms tests Schrödinger's interpretation of Einstein, Rosen, and Podolsky's classic thought experiment.

Focus

Predicting When a Material Will Crack

May 26, 2023

A combination of two techniques provides warning signs that the stress on a material will lead to failure.

Video

Drops Wear Different "Crowns"

May 23, 2023

A study of drops falling on a thin liquid film finds that splash behavior depends on film thickness—a result that could impact our understanding of stalagmite formation.

synopsis

Superconductor Vortices Visible as Stripes

May 30, 2023

An unusual kind of superconductor harbors magnetic vortices that researchers predict should be readily observable thanks to the striped configurations they adopt.

synopsis

Angle and Friction Matter for Table Tennis Spin

May 26, 2023

The angle of incidence and the friction of the surface are the only factors that impact the spin of a table tennis ball after it collides with a rigid surface.

synopsis

"Shuttled" Ions Stay Quantum

May 26, 2023

Researchers move an individual Mg+ ion more than 100,000 times between different sites in a trapping array without dropping it or ruining its quantum coherence.

synopsis

Static Electrons in Flat-Band Nonequilibrium Superconductors

May 25, 2023

Single electrons stay stationary in superconductors with "flat-band" electronic structures, which could lead to low-energy-consumption devices made from such materials.

synopsis

Gravity Alters the Shape of an Evaporating Droplet

May 24, 2023

Whether sitting or hanging, the surface of a protein-containing droplet changes as the water escapes, an effect researchers link to the pull of gravity.

synopsis

Curved-Laser Demonstration for a Higher-Energy Laser Accelerator

May 23, 2023

A curved "laser wakefield accelerator" could boost the acceleration potential of a multistage version of this device.

Research News

Squeezable Metal Offers a Greener Approach to Refrigeration

May 30, 2023

A system built around a metal that gains and loses heat when compressed could lead the way to the commercialization of chemical-free refrigeration technology.

Research News

Survey Finds Cheating Is Common in Graduate School

May 25, 2023

In a survey of 244 engineering graduate students, one fifth admit to cheating or committing some form of research malpractice during their studies.

Research News

Researchers Recreate a Nearsighted Eye

May 23, 2023

A new device can recreate the refractive errors of a myopic eye—one that displays nearsightedness—allowing scientists to test lenses designed to slow down the progression of the condition.



 

1 Physics Ellipse, College Park, MD 20740
© 2023 American Physical Society | All rights reserved
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Monday, May 22, 2023

This Week in Physics — Quantum Repeater Goes the Distance

 

This Week in Physics Magazine — May 22, 2023

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Quantum Repeater Goes the Distance

Michal Hajdušek – May 22, 2023

A quantum repeater based on trapped ions allows the transmission of entangled, telecom-wavelength photons over 50 km.

Research News

Space Dirt Reveals Age of Saturn's Rings

May 15, 2023

Micrometeoroids in Saturn's rings reveal that these dusty bands are no more than 400 million years old, making them significantly younger than the 4.5-billion-year-old gas giant.

synopsis

Record Precision for Hydrogen Spectroscopy Measurements

May 18, 2023

Measurements of the hyperfine splitting of certain electronic levels of hydrogen have broken precision records, potentially enabling precise tests of quantum electrodynamics.

Research News

Body Heat Limits Animals' Roaming Range

May 16, 2023

Large animals can move quickly thanks to their long appendages, but their ability to roam in response to climate change is also affected by their need to dissipate heat produced by their bulky bodies.

synopsis

Electron Bunches Break the Picosecond Barrier

May 17, 2023

A method for producing ultrashort, ultracold electron bunches could improve the resolution of electron-based imaging methods.

Research News

Measuring Cosmic Expansion with a Lensed Supernova

May 18, 2023

Astronomers have demonstrated a new method for determining the Hubble constant that involves measuring the time delay between multiple images of a lensed supernova.

synopsis

Quantum Boost for Magnetic Induction Tomography

May 16, 2023

Quantum effects improve the performance of magnetic induction tomography—an imaging technique that has promising medical applications.



 

1 Physics Ellipse, College Park, MD 20740
© 2023 American Physical Society | All rights reserved
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