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Issues

From the Editor

Physics Today 74 (4), 8 (2021); https://doi.org/10.1063/PT.3.4709

Readers’ Forum

Physics Today 74 (4), 10–11 (2021); https://doi.org/10.1063/PT.3.4710
Physics Today 74 (4), 11 (2021); https://doi.org/10.1063/PT.3.4711
Physics Today 74 (4), 11 (2021); https://doi.org/10.1063/PT.3.4712
Physics Today 74 (4), 11–12 (2021); https://doi.org/10.1063/PT.3.4713
Physics Today 74 (4), 12 (2021); https://doi.org/10.1063/PT.3.4714
Physics Today 74 (4), 12 (2021); https://doi.org/10.1063/PT.3.4715
Physics Today 74 (4), 12 (2021); https://doi.org/10.1063/PT.3.4716

Search and Discovery

Physics Today 74 (4), 14–16 (2021); https://doi.org/10.1063/PT.3.4717

The creation of a rare molecule offers a peek at how heavy atoms interact with other elements.

Physics Today 74 (4), 16–17 (2021); https://doi.org/10.1063/PT.3.4718

When a few ultracold atoms are repeatedly trapped and imaged tens of thousands of times, self-organized patterns emerge out of the quantum blue.

Physics Today 74 (4), 18–19 (2021); https://doi.org/10.1063/PT.3.4719

The layered anode emits bright, directed beams without the need for mirrors or large-scale accelerators.

Issues and Events

Physics Today 74 (4), 20–23 (2021); https://doi.org/10.1063/PT.3.4720

More than a year into the COVID-19 pandemic, researchers seek alternative targets to the spike protein, whose rapid mutations threaten the effectiveness of current vaccines.

Physics Today 74 (4), 22 (2021); https://doi.org/10.1063/PT.3.4721
Physics Today 74 (4), 24–29 (2021); https://doi.org/10.1063/PT.3.4722

Collaborations enrich science communication, visualization, and inspiration.

Articles

Physics Today 74 (4), 30–36 (2021); https://doi.org/10.1063/PT.3.4723

Emerging applications and studies utilize gallium-based alloys for their unique properties.

Physics Today 74 (4), 38–44 (2021); https://doi.org/10.1063/PT.3.4724

Meteorological practices that developed in the first millennium did not die in the Middle Ages but were radically improved with an international science of weather forecasting.

Physics Today 74 (4), 46–51 (2021); https://doi.org/10.1063/PT.3.4725

Fluid turbulence generates a chaotic soup of strongly nonlinear features that are hard to mathematically describe and model. A recent theoretical simplification brings fresh insight.

Books

Physics Today 74 (4), 53–54 (2021); https://doi.org/10.1063/PT.3.4726
Physics Today 74 (4), 54–55 (2021); https://doi.org/10.1063/PT.3.4727
Physics Today 74 (4), 55 (2021); https://doi.org/10.1063/PT.3.4728

New Products

Physics Today 74 (4), 56–58 (2021); https://doi.org/10.1063/PT.3.4729

Obituaries

In Special Collection: Print Obituaries
Physics Today 74 (4), 59 (2021); https://doi.org/10.1063/PT.3.4730
In Special Collection: Print Obituaries
Physics Today 74 (4), 60 (2021); https://doi.org/10.1063/PT.3.4731

Quick Study

Physics Today 74 (4), 62–63 (2021); https://doi.org/10.1063/PT.3.4732

Spin-based logic gates consume no power when idle, are compatible with CMOS circuitry, and can be seamlessly integrated with memory.

Back Scatter

Physics Today 74 (4), 64 (2021); https://doi.org/10.1063/PT.3.4733
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