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Monday, November 21, 2022

This Week in Physics - Measuring Entropy in Active-Matter Systems

 

This Week in Physics Magazine — November 21, 2022

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Measuring Entropy in Active-Matter Systems

Matteo Paoluzzi – November 21, 2022

A tool for estimating the local entropy production rate of a system enables the visualization and quantification of the out-of-equilibrium regions of an active-matter system.

Viewpoint

Probing the Limits of Nuclear Existence

November 16, 2022

Researchers have discovered the heaviest-known bound isotope of sodium and characterized other neutron-rich isotopes, offering important benchmarks for refining nuclear models.

Focus

Dark Matter as an Intergalactic Heat Source

November 18, 2022

Spectra from quasars suggest that intergalactic gas may have been heated by a form of dark matter called dark photons.

Synopsis

Frequency Combs from Just One Mode

November 18, 2022

Experiments disprove the general assumption that more than one wave mode is needed to produce a spectral pattern called a frequency comb.

Research News

Predicting Hemorrhagic Stroke

November 17, 2022

Patient-specific modeling could help clinicians determine whether an individual's brain aneurysm is at risk of bursting.

synopsis

Icicle Structure Reveals Growth Dynamics

November 17, 2022

Some icicles develop surface ripples as they grow. Researchers now explain the growth mechanism, but a full explanation remains elusive.

Research News

Honeybee Tongue Hair Linked to Nectar-Collection Efficiency

November 16, 2022

The length and diameter of the hairs on a honeybee's tongue determine how efficiently it can collect nectar from different flowers, a finding that could help communities plant the right flowers for this declining insect.

Synoposis

A Conformal Map Model for Leaf Growth

November 16, 2022

Physicists have shown that a mathematical transformation called a conformal map can be used to predict how leaves grow.

Research News

Expanding Universe in the Lab

November 15, 2022

Researchers control the speed of sound in an ultracold gas, mimicking features of a curved spacetime and reproducing quantum field behavior predicted in early Universe models.

Synoposis

Axion Miniclusters Might Be Microlenses

November 15, 2022

Asteroid-sized clumps of a dark matter candidate known as an axion could be detectable in a gravitational-microlensing survey.



 

1 Physics Ellipse, College Park, MD 20740
© 2022 American Physical Society | All rights reserved
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Monday, November 14, 2022

This Week in Physics - Paving the Way for Satellite Quantum Communications

 

This Week in Physics Magazine — November 14, 2022

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Paving the Way for Satellite Quantum Communications

Joseph C. Chapman and Nicholas A. Peters – November 9, 2022

A series of demonstrations by Micius—a low-orbit satellite with quantum capabilities—lays the groundwork for a satellite-based quantum communication network.

News Feature

Systemic Racism Reflected in Grant Allocations, Researchers Argue

November 8, 2022

Researchers call for reform in how funding is allocated in response to a study that finds racial disparities in the National Science Foundation's awarding of research grants.

Focus

Simulations Using a Quantum Computer Show the Technology's Current Limits

November 14, 2022

Quantum circuits still can't outperform classical ones when simulating molecules.

Research News

Predicting Black Hole Radio-Wave Hot Spots

November 10, 2022

Simulations of the plasma around a black hole indicate that "magnetic reconnection" could induce radio-wave hot spots that orbit the black hole, a prediction future Event Horizon Telescope measurements could test.

synopsis

Two Plasma Accelerators Become One

November 10, 2022

A new type of plasma accelerator combines two previous methods of producing an electron beam into one compact design.

synopsis

Wormholes Could Be Hiding in Plain Sight

November 10, 2022

Predictions indicate that wormholes and black holes may have nearly identical polarized light spectra, making these astrophysical objects difficult to distinguish.

synopsis

How Materials Get the Creeps

November 9, 2022

Researchers have developed a comprehensive theory of creep flow—a type of flow seen in amorphous solids such as coffee foam.

Research News

A Faster Charge for Electric Vehicles

November 8, 2022

A simple heating routine speeds up Li-ion battery charging to just 10 minutes.



 

1 Physics Ellipse, College Park, MD 20740
© 2022 American Physical Society | All rights reserved
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Monday, November 7, 2022

This Week in Physics - Connecting Phases of the Strong Force

 

This Week in Physics Magazine — November 7, 2022

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Chirping toward a Quantum RAM

Jarryd Pla – November 7, 2022

A new quantum random-access memory device reads and writes information using a chirped electromagnetic pulse and a superconducting resonator, making it significantly more hardware-efficient than previous devices.

Research News

Neutrino Astronomy Enters a New Era

November 3, 2022

Using the IceCube Neutrino Observatory in Antarctica, researchers have found significant evidence of a cosmic source of high-energy neutrinos.

synopsis

Explaining Mercury's Superconductivity, 111 Years Later

November 3, 2022

Theorists have finally explained the superconductivity of mercury, the first superconductor ever discovered—gaining insights that could be relevant to the search for room-temperature superconductors.

Focus

Magnetic Field Heats Up Fusion

November 4, 2022

A magnetic field can significantly boost the performance of a large-scale fusion experiment that may lead to a future source of clean power.

synopsis

Birth of Turbulence Captured for a Quantum Gas

November 4, 2022

The observation of the onset of turbulence in a gas of bosons allows researchers to explore how turbulence comes to life.

synopsis

Machine-Learning Tool Solves Metamaterial Jigsaw

November 2, 2022

A new tool can determine whether a collection of building blocks will assemble into a mechanically sound structure.

synopsis

Dwarf Galaxies Size Up Dark Matter Models

November 1, 2022

A proposed study of dwarf galaxies could give insight into whether dark matter particles interact with each other.



 

1 Physics Ellipse, College Park, MD 20740
© 2022 American Physical Society | All rights reserved
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