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Monday, February 6, 2023

This Week in Physics — Cosmological Parameters Improved by Combining Data

 

This Week in Physics Magazine — February 6, 2023

synopsis

Cosmological Parameters Improved by Combining Data

January 31, 2023

Using cross-correlation measurements and an updated cosmic-microwave-background lensing map, researchers determine cosmological parameters with greater precision.

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Tracking Isotopes in the Upper Atmosphere

February 1, 2023

The first measurements of a heavy oxygen isotope in Earth's upper atmosphere suggest that isotopic concentrations could become powerful probes of atmospheric processes at otherwise hard-to-probe altitudes.

Research News

The Fattier the Surface, the Silkier the Chocolate

February 6, 2023

New experiments show that the fat content at the surface of a piece of chocolate is the most influential factor in determining the candy's texture in the mouth.

Research News

Optical Fibers Go Topological

February 2, 2023

A new design for an optical fiber borrows concepts from topology to protect light from imperfections in the fiber's light-guiding materials or from distortions in its cross section.

Focus

How Sea Spray Might Disperse Large Particles

February 3, 2023

Experiments reveal new details of the process by which contaminants in the ocean could reach the atmosphere through the bursting of bubbles in foam.

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Trapped Ions Go the Distance

February 2, 2023

Researchers have achieved long-distance entanglement between two calcium ions, each of which lies in a different building, showing that trapped ions could be used to create quantum networks.

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Supercooled Drops Have Rocket-Like Propulsion

February 3, 2023

Ice nucleation in freezing drops can suddenly increase the drops' velocity via a rocket-like mechanism.



 

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