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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

Viewpoint

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.



 

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